Drive connections diagram – Bell & Gossett P2002379A Duty-Standby Pumps Alternation User Manual

Page 5

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Drive connections diagram

18

19

32

32

29

18

+24V DC

Input: Select bit 1 / Select bit 1

Output: No alarm / Hand/Off

+24VC

Input: Start / No operation

MASTER Drive

SLAVE Drive

Input: Select bit 0 / Select bit 0

Common

19

12

12

29

20

20

Input: Start / No operation

Common

Output: Logic rule 0 / Logic rule 0

Input: Select bit 0 / Select bit 0

COM 01

02

03

04

05

06

Relay 1:

Factory preset

Alarm / Alarm

Relay 2:

Factory preset

Running / Running

COM

COM

COM

04

05

06

01

02

Relay 1:

Factory preset

Alarm / Alarm

Relay 2:

Factory preset

Running / Running

Input: Select bit 1 / Select bit 1

03

Master Terminal

Slave Terminal

Master Terminal

MT12 — MT18
MT12 — MT19

MT20 — ST20
MT29 — ST32

Slave Terminal

ST29 — MT32

ST12 — ST18
ST12 — ST19

NOTES:
1. Remote Start/Stop switch can be added to the drives by removing the jumper wire

from pin 12 to pin 18 from both drives and connect remote start/stop to pin 12 and
pin 18 to both drives with parallel connection.

2. The DI terminal 19 provides the most significant bit value (always high) and the DI

terminal 32 provides the least significant bit value for selecting Setup 3 or Setup 4.

Operation

Duty-Standby Pumps Alternation INSTRUCTION MANUAL

3

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