Detcon 1000_H2S - Manual (Page 7)

Model 1000 H2S Echem
Model 1000 H2S Echem Instruction Manual Rev. 2.8 Page 3 of 30
Figure 3 Functional Block Diagram
Figure 4 DM-624 Control Circuit
1.4 Base Connector Board
The base connector board is mounted in the explosion proof enclosure and includes: the mating connector for
the control circuit, reverse input and secondary transient suppression, input filter, alarm relays, lugless
terminals for all field wiring, and a terminal strip for storing unused programming jumper tabs. The alarm
relays are contact rated 5 amps @ 250VAC, 5 amps @ 30VDC and coil rated at 24VDC. Gold plated program
jumpers are used to select either the normally open or normally closed relay contacts.
Figure 5 Connector Board Terminals