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Technical Description

The 7321 is the same device as CRYDOM's model D1D07 that's distributed through Newark Electronics and others. One datalogger control port controls each relay.

Normally Open

This relay is usually operated in the Normally Open state. In this state, when the control port is set high, the relay is closed. Wiring for this situation is as follows:

Datalogger Terminal Relay Screw Terminal
ground 4
control port
(i.e., C1, C2,...)
3

Normally Closed

The 7321 can also be operated in the Normally Closed state. In this state, when the control port is low, the relay is closed. Wiring for this situation is as follows:

Datalogger Terminal Relay Screw Terminal
5V 3
control port
(i.e., C1, C2,...)
4

7321 Specifications

  • Control Voltage: 3.5 to 32 Vdc
  • Control Current: 1.6 mA @ 5 Vdc
  • Rated Current/Voltage: 7 A @ 100 Vdc

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