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The 7321 is a single-channel, solid-state relay that allows a datalogger to control one or two dc devices.
Read MoreThe 7321 is the same device as CRYDOM's model D1D07 that's distributed through Newark Electronics and others. One data logger digital port controls each relay.
This relay is usually operated in the Normally Open state. In this state, when the digital port is set high, the relay is closed. Wiring for this situation is as follows:
| Data Logger Terminal | Relay Screw Terminal |
| ground | 4 |
| digital port (i.e., C1, C2,...) |
3 |
The 7321 can also be operated in the Normally Closed state. In this state, when the digital port is low, the relay is closed. Wiring for this situation is as follows:
| Data Logger Terminal | Relay Screw Terminal |
| 5V | 3 |
| digital port (i.e., C1, C2,...) |
4 |
| Function | Allows a data logger to control one or two dc devices. |
| Number of Channels | 1 |
| Operating Temperature | -40° to +100°C |
| Operating Voltage | 1 to 100 Vdc |
| Control Voltage | 3.5 to 32 Vdc |
| Control Current | 1.6 mA (@ 5 Vdc) |
| Rated Current/Voltage | 7 A (@ 100 Vdc) |
| Dimensions | 5.99 x 2.74 x 5.99 cm (2.36 x 1.08 x 2.36 in.) |
| Weight | 108.86 g (0.24 lb) |
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
| Product | Compatible | Note |
|---|---|---|
| 21X (retired) | ||
| CR10 (retired) | ||
| CR1000 (retired) | ||
| CR10X (retired) | ||
| CR200X (retired) | ||
| CR206X (retired) | ||
| CR211X (retired) | ||
| CR216X (retired) | ||
| CR23X (retired) | ||
| CR295X (retired) | ||
| CR3000 (retired) | ||
| CR500 (retired) | The CR500 has only one digital port capable of providing control signal. | |
| CR5000 (retired) | ||
| CR510 (retired) | The CR510 has only one digital port capable of providing control signal. | |
| CR800 (retired) | ||
| CR850 (retired) | ||
| CR9000 (retired) | ||
| CR9000X (retired) |