Page 4.2
HIGH POWER RELAY MODULE 40-170
pickering
SECTION 4 - PROGRAMMING GUIDE
MODULE ARCHITECTURE - 40-170
One sub-unit is used to control all the module’s relays as shown below. Enabling a particular bit closes the C to A
signal path.
40-170-001 (2 x SPST)
Sub-Unit
Bit
40-170-001 Signal Path
(with relay energised)
40-170-002 Signal Path
(with relay energised)
1
1
C1 to A1
C1.1 to A1.1 and C1.2 to A1.2
1
2
C2 to A2
C2.1 to A2.1 and C2.2 to A2.2
The 40-170 High Power Relay Module is available with 2 x SPST or 2 x DPST Normally Open Power relays.
Energising a particular relay creates a signal path between the C and A terminals. The relay module’s switching
architectures are shown in their default state in the diagrams below:
40-170-002 (2 x DPST)
A2
C2
A1
C1
A1.2
C1.2
A1.1
C1.1
A2.2
C2.2
A2.1
C2.1
A2
C2
A1
C1
A1.2
C1.2
A1.1
C1.1
A2.2
C2.2
A2.1
C2.1
