Drive connections diagram – Bell & Gossett P2002379A Duty-Standby Pumps Alternation User Manual
Page 5

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