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READ THESE INSTRUCTIONS ENTIRELY BEFORE INSTALLATION.

INTRODUCTION

The PumpControl

™

 Model PC-105 is a five-

channel pump controller that can handle
multiple pump applications or operate as a
5-channel switch. The PC-105 can indicate
low, high and out-of-sequence alarms and
use alternating pump control, non-
alternating pump control, or alternating
control with one non-alternating pump.  The
non-alternating pump can be used as  either
a jockey or emergency pump and can
optionally be cycled once every 50 cycles of
the lead pump to keep it working freely.
Using the built-in DIP switches, individual
pumps can be disabled when taken out of
service for repair or maintenance.

The PC-105 has the following features and capabilities:

4

High, low and out-of-sequence alarms

4

Variable time delay/lag pump delay

4

Separate pump stop

4

Pump alternation with or without a non-alternating pump

4

Jockey or emergency pump

4

Duplex, triplex or quadplex pump modes

4

Pump-up or pump-down functions

4

External silence, reset and alternation configuration

4

Five-channel relay

I

1

I

2

I

3

I

4

I

5

I

C

RELAY

#1

REL AY

#2

RELAY

#3

RELAY

#4

RELAY

#5

INPUT

PC-105

1-800-843-8848

www.pumpsaver.com

INSTALLATION INSTRUCTIONS

FOR SYMCOM’S

PUMPCONTROL

™

MODEL

PC-105

! WARNING !

UNEXPECTED OUTPUT ACTU ATION CAN OCCUR .

Use hard-wired safety interlocks where personnel and/or equipment hazards exist.

Failure to follow this instruction can result in death, injury or equipment damage.

2880 North Plaza Drive, Rapid City, South Dakota 57702

(800) 843-8848

·

 (605) 348-5580

·

 fax (605) 348-5685

www.symcom.com

2

10/06

QUICK START

The PC-105 can operate as a pump controller for eight different pumping configurations. Duplex,
triplex, quadplex and duplex SPS (separate pump stop) pumping modes are possible for either
pump-up or pump-down applications. Refer to page 18  for the full description of five-channel relay
operation.

Refer  to

PUMPING MODES

 (page 4) for details of PC-105 features and mode descriptions.

1. If you know the system’s pump configuration, follow Table 1 to the page showing the typical

wiring diagram and setup for each mode.

2. If further description is needed in choosing which mode to use, see Table 2 and Table 3 to view

the capabilities of each pumping mode and look at the typical wiring diagrams of the eight
different pumping modes starting on page 8.

3. Once the desired configuration is determined, punch out and slide the correct card into the slot

on the front of the PC-105 to display the input and output connections.

Mode Selector

Switch

Mode Description

Page

0

5-Channel Relay – Mode 0

19

1

Duplex Pump-Down – Mode 1

8

2

Triplex Pump-Down – Mode 2

9

3

Quadplex 

Pump-Down 

– 

Mode 

3 

10

4

Duplex 

SPS 

Pump-Down 

– 

Mode 

4 

11

5

Duplex Pump-Up – Mode 5

12

6

Triplex Pump-Up – Mode 6

13

7

Quadplex Pump-Up – Mode 7

14

8

Duplex 

SPS 

Pump-Up 

– 

Mode 

8 

15

Table 1: Mode Selector Switch Details

Model Description

The PC-105 has three adjustable controls to set the mode of operation:

1. 

Mode 

Selector

2. 

Option 

Selector

3. 

Time 

Delay

WARNING!

To ensure proper initialization and operation, set the mode
and option selectors before applying power to the unit.

3

10/06

Time Delay

The time delay can be set from 2–255 seconds and is the delay before the lag pump will turn on in
each of the pumping modes. When the lead float closes (direct logic), the time delay starts and
when it expires, the lag pump is ready to turn on or will turn on if the lag input is closed (direct
logic). All subsequent pumps will turn on as called for after a two-second time delay each.

Mode Selector

The mode selector switch sets the operation mode. A description of each mode is shown in Table
1. The capabilities of each pumping mode and the non-alternating pump designations are shown in
Table 2 below.

Duplex 

Triplex  Quadplex Duplex 

SPS

# Pumps

2

3

4

2

High alarm

Yes

*Yes

No

**Yes

Low alarm

Yes

*Yes

No

**Yes

Out-of-sequence  alarm

Yes

Yes

Yes

Yes

# Stop floats

1

1

1

2

Pump direction

Up/Down Up/Down Up/Down  Up/Down

Non-alternating start float

Lag 

1 

Lag 

2 

Lag 

3

N/A

Non-alternation  pump

Pump 

2 

Pump 

3 

Pump 

4

N/A

Alternator

Yes

Yes

Yes

Yes

Table 2: Mode Capabilities

  *  On a Triplex system, either a High or Low Alarm is available—not both. See Triplex:

High/Low Alarm

 (pg. 5) for

details.

 ** Duplex SPS applications typically use High Alarms on Pump-Down systems and Low Alarms on Pump-Up.

Option Selector

Table 2 describes the Option Selector for all pumping modes.
  (A “

a

” Indicates the function is available for the pump mode)

Option

Selector

Switch

Function Description

Duplex Triplex Quadplex

Duplex SPS

(Separate

Pump Stop)

1

High alarm

a

*

a

a

2

Low alarm

a

*

a

a

3

Pump 1

a

a

a

a

4

Pump 2

a

a

a

a

5

Pump 3

a

a

6

Pump 4

a

7

Audible alarm relay logic

a

a

a

a

8

ALS-0 –

Alternator select 0 (see Table 4)

a

a

a

a

9

ALS-1 –

Alternator select 1 (see Table 4)

a

a

a

a

10

ALS-2 –

Alternator select 2 (see Table 4)

a

a

a

a

Table 3: Option Selector Switch Details

* On a Triplex system, either a high or low alarm can be utilized—not both. See

Triplex: High/Low Alarm

 (page 4)

for details.

4

10/06

PUMPING MODES

Duplex

– two pumps with one stop float, a high alarm and a low alarm.

Triplex: High/Low Alarm

–

three pumps with one stop float and a high or low alarm.

Triplex  Pump-Down

: a high alarm is typically used—Option Selector: 1=ON, 2=OFF.

If a low alarm is preferred, the alarm float must be moved to the location in the tank below the
Stop Float—Option Selector: 1=OFF and 2=ON.

Triplex  Pump-Up

: a low alarm is typically used—Option Selector: 1=OFF, 2=ON.

If a high alarm is preferred, the alarm float must be moved to the location in the tank above the
Stop Float—Option Selector: 1=ON  and 2=OFF.

Quadplex

– four pumps with one stop float and no alarms floats.

Separate Pump Stop (SPS)

– two pumps, two stop floats, and a high or low alarm.

In

Duplex SPS

 mode, both the lead and lag pumps have their own stop floats.

Duplex SPS Pump-Down

: a high alarm is typically used—Option Selector: 1=ON, 2=OFF.

If a low alarm is preferred, the alarm float must be moved to the location in the tank below the
Lead Stop Float—Option Selector: 1=OFF, 2=ON.

Duplex SPS Pump-Up

: a low alarm is typically used—Option Selector: 1=OFF, 2=ON.

If a high alarm is preferred, the alarm float must be moved to the location in the tank above the
Lead Stop Float—Option Selector: 1=ON, 2=OFF.

PC-105 FUNCTIONS

High Alarm

The High Alarm relay is activated when the High Alarm Float closes, indicating the pumps are
unable to keep the water level down on a pump-down application.  If the High Alarm Float closes at
any time, all pumps will turn on, bypassing the 10-second out-of-sequence trip delay, and the
adjustable Time Delay.

If a high alarm is used on a pump-up application, the alarm will be activated when the High Alarm
Float closes indicating the water level has been pumped too high, possibly due to a defective Stop
Float, and will turn off all pumps.

During a high or low alarm, the Alarm LED and Audible Alarm LED will be on. If the high or low
alarm condition ends, the Audible Alarm will turn off and the Alarm LED will flash indicating the
alarm had occurred, but is not present now.  If the high or low alarm occurs again, the Audible
Alarm LED will turn on again, but the Alarm LED will remain flashing. The unit must be silenced or
reset to clear the flashing alarm LEDs.

Low Alarm

The Low Alarm relay is activated when the Low Alarm Float opens indicating the pumps are unable
to keep the water level up on a pump-up application. If the pump-up Low Alarm Float opens at any
time, except if a High Alarm is activated, all pumps will turn on.

If a low alarm is used on a pump-down application, the alarm will be activated when the Low Alarm
Float opens indicating the water level has been pumped too low. This may be a result of a defective
stop float. The low alarm will not turn off the pumps though, but will activate the low alarm relay—
another form of pump-dry protection such as the SymCom Model 777 may be necessary.

5

10/06

Out-of-Sequence Alarm

When a float in the series does not open or close in sequence, the Audible Alarm relay will be
activated and input LED(s) will flash until the unit is reset or power is cycled. An out-of-sequence
condition has to exist for 10 seconds before the PC-105 will alarm. When the stop float fails open in
pump-down mode or closed in pump-up mode, an out-of-sequence alarm will not occur and pumps
will not turn on with floats. In this case, all pumps will turn on when the High/Low Alarm input is
activated. Thus, in Quadplex mode, pumps will never turn on if the Stop Float malfunctions.

Audible Alarm

The Audible Alarm relay is activated when a high, low or out-of-sequence alarm occurs. The
Audible Alarm will turn off when there is no longer high or low alarms or if the unit is silenced.

Audible Alarm Logic / Fail-Safe

The Audible Alarm relay can be configured to operate in either fail-safe mode (switch 7=ON), or
non fail-safe mode (switch 7=OFF). In fail-safe mode, the N.C. (normally closed) contacts will be
open during normal operation and closed during an alarm. In non-fail-safe mode, the N.C. contacts
will be closed during normal operation and open during an alarm.

Clearing Alarms

The external Silence / Alarm Reset button will clear the Audible Alarm. The Reset button or cycling
power will clear out-of-sequence alarms.

Alternation

The PC-105 is equipped with a built-in alternator that determines which pump will start each
pumping cycle. This alternator is configured using switches ALS-0, ALS-1 and ALS-2 (switches 8, 9
and 10 of the Option Selector).

Function

ALS-0 

(8) 

ALS-1 

(9)  ALS-2 

(10)

Alternation On

ON

ON

ON

Alternation On

OFF

ON

ON

Alternation 

On, 

Non-Alternating 

Pump 

Enabled 

(1) 

*ON 

OFF

OFF

Alternation 

On, 

Non-Alternating 

Pump 

Enabled 

(1) 

**OFF 

OFF

OFF

Alternation Off, Force Pump 1 as Lead

OFF

ON

OFF

Alternation Off, Force Pump 2 as Lead

OFF OFF

ON

Alternation Off, Force Pump 3 as Lead (2)

ON

ON

OFF

Alternation Off, Force Pump 4 as Lead (3)

ON

OFF

ON

Table 4: Alternator Options

Note (1)   In Duplex Mode, this setting is the same as Alternation On.
Note (2)   In Duplex Mode, Pump 1 is the Lead Pump and Pump 2 will be cycled every 50 cycles of the Lead.
Note (3)   In Duplex Mode, Pump 2 is the Lead Pump and Pump 1 will be cycled every 50 cycles of the Lead.

  *  If ALS-0 is ON in this mode, the Non-Alternating Pump will cycle when the non-alternating float changes state,

or after 50 cycles of the Lead float.

 ** If ALS-0 is OFF the Non-Alternating Pump will cycle only when the non-alternating float changes state.

6

10/06

Alternation On

When the alternator is on, each pump will be alternated as the Lead Pump (see Table 5).

Cycle 

1 

Cycle 

2 

Cycle 

3 

Cycle 

4 

Cycle 

5

Pump 1

Lead

Lag 

3 

Lag 

2 

Lag 

1

Lead

Pump 2

Lag 1

Lead

Lag 

3 

Lag 

2

Lag 1

Pump 3

Lag 

2 

Lag 

1

Lead

Lag 3

Lag 2

Pump 4

Lag 

3 

Lag 

2 

Lag 

1

Lead

Lag 3

Table 5. Pump Sequence

Alternation On, Non-Alternating Pump Enabled

The Triplex and Quadplex pump modes are equipped with an optional Non-Alternating Pump. This
pump will

not

 be included in the normal pump alternation sequence when ALS-1 and ALS-2

(switches 9 and 10) are both OFF. If ALS-0 (switch 8) is ON, the non-alternating pump will cycle
when the Non-Alternating Float changes state or after every 50 cycles of the Lead Float. If ALS-0 is
OFF, the non-alternating pump will only cycle if the non-alternating float changes state.

The last pump in the float sequence (highest #) is the non-alternating pump and can be used as
either a jockey or emergency pump. (See Table 2, page 3 for non-alternating pump and float details
for each pumping mode.)

A

Jockey Pump

 is typically a smaller pump that will always be used first in the pump sequence.

In order to implement a jockey pump, the non-alternating pump float must be moved in the tank
to just above the Stop Float on a pump-down system, and to just below the Stop Float on a
pump-up system. See
Figure 9 (page 16)—an example wiring diagram using a jockey pump in a duplex pump-down
system.

An

Emergency  Pump

 is usually a larger pump that is always used last. In order to implement an

emergency pump, the non-alternating pump is already the last pump in the sequence so there is
no need to move the float. See Figure 10 (page 17)—an example wiring diagram using an
emergency pump on a duplex pump-down system.

Alternation Off

When the alternator is off, a Lead Pump can be forced by setting ALS-0, ALS-1 and ALS- 2 (see
Table 4). The remaining pumps will start in a sequential order as  each float opens/closes.

Disabling Pumps

Using the built-in DIP switches, individual pumps can be disabled, when taken out of service for
repair or maintenance.

7

10/06

External Inputs

A five-pin connector is provided for optional external inputs.

· External Silence / Alarm Reset

This input allows for an external N.O. (normally open) pushbutton that will silence audible
alarms and clear flashing alarm lights.

· External Power Reset

This input allows for an external N.O. pushbutton to reset the PC-105, causing the same effect
as a power cycle.

· External Alternation Configuration

For duplex mode, a SPDT (single-pole, double-throw) switch can be connected to close RTCL1
or RTCL2 (remote controls) to force Pump 1 or 2 as the Lead Pump. Option Selector switches
8, 9 & 10 must be OFF. If the switch is in the middle position, pumps will be in alternation mode.

For triplex and quadplex modes, two SPST (single-pole, single-throw) switches can be
connected to force Pump 1, 2, 3 or 4 to be the Lead Pump. Option Selector switches 9 & 10
must be OFF.

To force Pump 1 or 2 as Lead, Option Selector switch 8 must be OFF.
To force Pump 3 or 4 as Lead, Option Selector switch 8 must be ON.
For alternation mode, close both RTCL1 and RTCL2.

8

10/06

WIRING DIAGRAMS

The following figures, 1-10, show typical wiring diagrams for all available PC-105 pumping modes .

Figure 1: Typical Wiring for Duplex Pump-Down – Mode 1

Switch State

Mode Selector Switch

1

Time Delay Adjustment

MIN

Option Selector Switch

1

High Alarm

ON

2

Low Alarm

ON

3

Pump 1

ON

4

Pump 2

ON

5

Pump 3

NA

6

Pump 4

NA

7

Fail-Safe

OFF

8

ALS-0

ON

9

ALS-1

ON

10

ALS-2

ON

Table 6: Typical Duplex Pump-Down System

I

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2

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3

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#1

PUMP

#1

PUMP

#2

LOW

ALARM

HIGH

ALARM

LOW

ALARM

HIGH

ALARM

STOP

LEAD

LAG1

COMMON

AUDIBLE

ALARM

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www. pumpsaver.com

#2

#3

#4

#5

INP UT

Low Alarm Float

Stop Float

Lead Float

Lag 1 Float

High Alarm Float

120 VAC

Pump

1

Pump

2

Audible Alarm

High

Ala rm

Low

Ala rm

PUMP

9

10/06

I

1

I

2

I

3

I

4

I

5

I

C

#1

PUMP

#1

PUMP

#2

PUMP

#3

HIGH/LOW

ALARM

HIGH/LOW

ALARM

LEAD

STOP

LAG1

LAG2

COMMON

AUDIBLE

ALARM

#2

#3

#4

#5

INPUT

Pump

1

Pump

2

Pump

3

Stop Float

Lead Float

Lag 1 Float

Lag 2 Float

High Alarm Float

120 VAC

Audible Alarm

Alarm

PUMP

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Figure 2: Typical Wiring for Triplex Pump-Down – Mode 2

Switch State

Mode Selector Switch

2

Time Delay Adjustment

MIN

Option Selector Switch

1

High Alarm

ON

2

Low Alarm

OFF

3

Pump 1

ON

4

Pump 2

ON

5

Pump 3

ON

6

Pump 4

NA

7

Fail-Safe

OFF

8

ALS-0

ON

9

ALS-1

ON

10

ALS-2

ON

Table 7: Typical Triplex Pump-Down System

10

10/06

I

1

I

2

I

3

I

4

I

5

I

C

#1

PUMP

#1

PUMP

#2

PUMP

#3

PUMP

#4

LEAD

STOP

LAG1

LAG2

LAG3

COMMON

AUDIBLE

ALARM

#2

#3

#4

#5

INPUT

Pump

1

Pump

3

Stop Float

Lead Float

Lag 1 Float

Lag 2 Float

Lag 3 Float

120 VAC

Pump

2

Pump

4

Audible Alarm

PUMP

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Figure 3: Typical Wiring for Quadplex Pump-Down – Mode 3

Switch State

Mode Selector Switch

3

Time Delay Adjustment

MIN

Option Selector Switch

1

High Alarm

NA

2

Low Alarm

NA

3

Pump 1

ON

4

Pump 2

ON

5

Pump 3

ON

6

Pump 4

ON

7

Fail-Safe

OFF

8

ALS-0

ON

9

ALS-1

ON

10

ALS-2

ON

Table 8: Typical Quadplex Pump-Down System

11

10/06

I

1

I

2

I

3

I

4

I

5

I

C

#1

PUMP

#1

PUMP

#2

HIGH

ALARM

LOW

ALARM

HIGH

ALARM

LOW

ALARM

STOP

LEAD

LAG1

COMMON

AUDIBLE

ALARM

#2

#3

#4

#5

INPUT

Low Alarm Float

Lag 1 Float

Lead Float

Stop Float

High Alarm Float

120 VAC

Pump

1

Pump

2

Audible Alarm

Low

Alarm

High

Alarm

PUMP

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Figure 4: Typical Wiring for Duplex SPS Pump-Down – Mode 4

Switch State

Mode Selector Switch

4

Time Delay Adjustment

MIN

Option Selector Switch

1

High Alarm

ON

2

Low Alarm

OFF

3

Pump 1

ON

4

Pump 2

ON

5

Pump 3

NA

6

Pump 4

NA

7

Fail-Safe

OFF

8

ALS-0

ON

9

ALS-1

ON

10

ALS-2

ON

Table 9: Typical Duplex SPS Pump-Down System

12

10/06

I

1

I

2

I

3

I

4

I

5

I

C

#1

PUMP

#1

PUMP

#2

HIGH

ALARM

LOW

ALARM

HIGH

ALARM

LOW

ALARM

STOP

LEAD

LAG1

COMMON

AUDIBLE

ALARM

#2

#3

#4

#5

INPUT

Low Alarm Float

Lag 1 Float

Lead Float

Stop Float

High Alarm Float

120 VAC

Pump

1

Pump

2

Audible Alarm

Low

Alarm

High

Alarm

PUMP

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Figure 5: Typical Wiring for Duplex Pump-Up – Mode 5

Switch State

Mode Selector Switch

5

Time Delay Adjustment

MIN

Option Selector Switch

1

High Alarm

ON

2

Low Alarm

ON

3

Pump 1

ON

4

Pump 2

ON

5

Pump 3

NA

6

Pump 4

NA

7

Fail-Safe

OFF

8

ALS-0

ON

9

ALS-1

ON

10

ALS-2

ON

Table 10: Typical Duplex Pump-Up System

13

10/06

I

1

I

2

I

3

I

4

I

5

I

C

#1

PUMP

#1

PUMP

#2

PUMP

#3

HIGH/LOW

ALARM

HIGH/LOW

ALARM

LEAD

STOP

LAG1

LAG2

COMMON

AUDIBLE

ALARM

#2

#3

#4

#5

INPUT

Pump

1

Pump

2

Pump

3

Lag 2 Float

Lag 1 Float

Lead Float

Stop Float

Low Alarm Float

120 VAC

Audible Alarm

Alarm

PUMP

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Figure 6: Typical Wiring for Triplex Pump-Up - Mode 6

Switch State

Mode Selector Switch

6

Time Delay Adjustment

MIN

Option Selector Switch

1

High Alarm

OFF

2

Low Alarm

ON

3

Pump 1

ON

4

Pump 2

ON

5

Pump 3

ON

6

Pump 4

NA

7

Fail-Safe

OFF

8

ALS-0

ON

9

ALS-1

ON

10

ALS-2

ON

Table 11: Typical Triplex Pump-Up System

14

10/06

I

1

I

2

I

3

I

4

I

5

I

C

#1

PUMP

#1

PUMP

#2

PUMP

#3

PUMP

#4

LEAD

STOP

LAG1

LAG2

LAG3

COMMON

AUDIBLE

ALARM

#2

#3

#4

#5

INPUT

Pump

1

Pump

3

Lag 3 Float

Lag 2 Float

Lag 1 Float

Lead Float

Stop Float

120 VAC

Pump

2

Pump

4

Audible Alarm

PUMP

1-800-843-8848

www.pumpsaver.com

Figure 7: Typical Wiring for Quadplex Pump-Up – Mode 7

Mode Selector Switch

7

Time Delay Adjustment

MIN

Option Selector Switch

1

High Alarm

NA

2

Low Alarm

NA

3

Pump 1

ON

4

Pump 2

ON

5

Pump 3

ON

6

Pump 4

ON

7

Fail-Safe

OFF

8

ALS-0

ON

9

ALS-1

ON

10

ALS-2

ON

Table 12: Typical Quadplex Pump-Up System

15

10/06

I

1

I

2

I

3

I

4

I

5

I

C

#1

PUMP

#1

PUMP

#2

LOW

ALARM

HIGH/LOW

ALARM

LEAD

STOP

LAG

STOP

HIGH/LOW

ALARM

LEAD

LAG

COMMON

AUDI BLE

ALARM

#2

#3

#4

#5

INPUT

Low Alarm Float

Lag Float

Lag Stop Float

Lead Float

Lead Stop Float

120 VAC

Pump

2

Audible Alarm

Low

Alarm

Pump

1

PUMP

1-800-843-8848

www.pumpsaver.com

Figure 8: Typical Wiring for Duplex SPS Pump-Up – Mode 8

Switch State

Mode Selector Switch

8

Time Delay Adjustment

MIN

Option Selector Switch

1

High Alarm

OFF

2

Low Alarm

ON

3

Pump 1

ON

4

Pump 2

ON

5

Pump 3

NA

6

Pump 4

NA

7

Fail-Safe

OFF

8

ALS-0

ON

9

ALS-1

ON

10

ALS-2

ON

Table 13: Typical Duplex SPS Pump-Up System

16

10/06

I

1

I

2

I

3

I

4

I

5

I

C

#1

PUMP

#1

PUMP

#2

LOW

ALARM

HIGH

ALARM

LOW

ALARM

HIGH

ALARM

STOP

LEAD

LAG1

COMMON

AUDIBLE

ALARM

#2

#3

#4

#5

INPUT

Low Alarm Float

Stop Float

Jockey Float

Lead Float

High Alarm Float

120 VAC

Pump

1

Pump

2

Audible Alarm

High

Alarm

Low

Alarm

PUMP

1-800-843-8848

www.pumpsaver.com

Figure 9: Typical Wiring for Duplex Pump-Down with Jockey Pump – Mode 1

Switch State

Mode Selector Switch

1

Time Delay Adjustment

MIN

Option Selector Switch

1

High Alarm

ON

2

Low Alarm

ON

3

Pump 1

ON

4

Pump 2

ON

5

Pump 3

NA

6

Pump 4

NA

7

Fail-Safe

OFF

8

ALS-0

OFF

9

ALS-1

ON

10

ALS-2

OFF

Table 14: Typical Duplex Pump-Down System with Jockey Pump

17

10/06

I

1

I

2

I

3

I

4

I

5

I

C

#1

PUMP

#1

PUMP

#2

LOW

ALARM

HIGH

ALARM

LOW

ALARM

HIGH

ALARM

STOP

LEAD

LAG1

COMMON

AUDIBLE

ALARM

#2

#3

#4

#5

INPUT

Low Alarm Float

Stop Float

Lead Float

Emergency Float

High Alarm Float

120 VAC

Pump

1

Pump

2

Audible Alarm

High

Alarm

Low

Alarm

PUMP

1-800-843-8848

www.pumpsaver.com

Figure 10: Typical Wiring for Duplex Pump-Down with Emergency Pump – Mode

 1

Switch State

Mode Selector Switch

1

Time Delay Adjustment

MIN

Option Selector Switch

1

High Alarm

ON

2

Low Alarm

ON

3

Pump 1

ON

4

Pump 2

ON

5

Pump 3

NA

6

Pump 4

NA

7

Fail-Safe

OFF

8

ALS-0

OFF

9

ALS-1

OFF

10

ALS-2

ON

Table 15: Typical Duplex Pump-Down System with Jockey Pump

18

10/06

FIVE-CHANNEL RELAY MODE

Some unique features of the five-channel relay mode are described below.

To use the PC-105 in this mode, the Mode Selector dial must be set to 0.

Option

Selector

Switch

Function Description

ON Function

OFF Function

1 

Enables 

Channel 

2 

Latch

Channel 1 and 2 function

normally

Channel 1

Latches Channel 2

2 

Enables 

Channel 

4 

Latch

Channel 3 and 4 function

normally

Channel 3

Latches Channel 4

3

Relay 1 Logic

Positive

Negative

4

Relay 2 Logic

Positive

Negative

5

Relay 3 Logic

Positive

Negative

6

Relay 4 Logic

Positive

Negative

7

Relay 5 Logic

Positive

Negative

8

Selects  Make/Break

Delay-On-Break

Delay-On-Make

9

Enables  Delay-On-

Make/Break Timer

Make/Break Timer Disabled Make/Break Timer Enabled

10

Not Used

-----

-----

Table 16: Five-Channel Relay Options

Positive/Negative Logic

Using

positive logic

 will give the same output as input—if the input is closed, the corresponding

output relay is closed.

If using

negative logic

, the output will be the opposite of the input—if the input is closed, the output

relay is open.

Latched Output

Relays 2 and 4 can be configured as latched relays. Input 2 will cause relay 2 to close, but this
relay will not open until input 1 opens. Relay 4 will close when input 4 closes, but will not open until
input 3 opens.

Time Delay Output

Relay 5 can be configured as a Delay-On-Make or a Delay-On-Break time delay output. All timing
starts when the input switch opens or closes. The time base for this output is adjustable using the
Time Delay knob and ranges from 2-255 seconds.

Delay-On-Make

If Input 5 closes, the Time Delay will start and LED 5 will flash.  Once the time delay has
expired, output relay 5 will close and the LED will be on. If Input 5 opens at any point during the
timing cycle, the time delay stops and output relay 5 remains open.

Delay-On-Break

If input 5 opens, the time delay will start and LED 5 will flash. Once the time delay has expired,
output relay 5 will open and the LED will be off.  If input 5 closes at any point during the timing
cycle, the time delay stops and output relay 5 remains closed.

19

10/06

I

1

I

2

I

3

I

4

I

5

I

C

#1

OUTPUT OUTPUT

OUTPUT OUTPUT

INPUT

INPUT

INPUT

INPUT

INPUT

COMMON

TIME DELAY

OUTPUT

#2

#3

#4

#5

INPUT

Load

1

Load

3

120 VAC

Load

2

Load

4

Load

5

1-800-843-8848

www.pumpsaver.com

Figure 11: Typical Wiring for 5-channel Relay – Mode 0

SymCom warrants its microcontroller-based products against defects in material or
workmanship for a period of five (5) years from the date of manufacture. All other
products manufactured by SymCom shall be warranted against defects in material and
workmanship for a period of two (2) years from the date of manufacture. For complete
information on warranty, liability, terms, returns, and cancellations, please refer to the
SymCom Terms and Conditions of Sale document.

20

10/06

Model PC-105 Specifications

Control Voltage

108–132VAC

Frequency

50/60 Hz

Power

4 Watts (max.)

Adjustments

     Time delay/lag pump delay

2–255 sec.

     Mode Selector

0 – 8  (9–F: force mode 0)

     Option Selector

1–10, ON/OFF

     Silence button

dry input only

     Reset button

dry input only

     

External 

alternation 

configuration 

ALS-1

     

External 

alternation 

configuration 

ALS-2

Pumping modes available

     Duplex pump-down

2 pumps with high and low alarms

     Triplex pump-down

3 pumps with high alarm (typical)

     Quadplex pump-down

4 pumps

     Duplex pump-down SPS
     (separate pump stop)

2 pumps with high alarm (typical) 2 stop floats

     Duplex pump-up

2 pumps with high and low alarms

     Triplex pump-up

3 pumps with low alarm (typical)

     Quadplex pump-up

4 pumps

     Duplex pump-up SPS
     (separate pump stop)

2 pumps with low alarm (typical) 2 stop floats

5-Channel relay mode

     5-channel

1 relay latched / time delay output

Operating  temperature

-20 to 55°C

Terminals

     Wire AWG

12–20 AW G

     Torque

6 in.-lbs.

Relay contacts

B 300 or 480VA @ 240VAC, Pilot Duty

240 VAC, 7A (max.), general purpose

Pump inrush delay

2 sec.

Standards passed

     Electrostatic discharge (ESD)

IEC 61000-4-2, Level 3, 6 kv contact, 8 kv air

      Radio frequency immunity (RFI)

IEC 61000-4-2, Level 3, 10V/m

     Fast transients

IEC 61000-4-4, Level 3, 4 kv input power
2 kV inputs/outputs

2880 North Plaza Drive, Rapid City, South Dakota 57702

(800) 843-8848

·

 (605) 348-5580

·

 fax (605) 348-5685

www.symcom.com