4 base connector board, Base connector board, Figure 3 functional block diagram – Detcon 1000 User Manual

Page 7: Figure 4 dm-624 control circuit, Figure 5 connector board terminals

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Mdl 1000 H2S E-Chem / Inst. Air

Model 1000 H2S E-Chem w Instrument Air

Rev. 1.1

Page 3 of 28

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, lug less
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