Units with the dry-contact hardware option enabled are equipped with four dry-contact inputs that enable you to monitor and report the status of external devices.
The reporting of the current state of each dry-contact input is found in System â–¶ Alarm â–¶Dry-Contact.
| Pin | Signal |
|---|---|
| 1 | GND1 (ground) |
| 2 | DC1 (dry-contact 1 input) |
| 3 | GND3 (ground) |
| 4 | DC2 (dry-contact 2 input) |
| 5 | GND2 (ground) |
| 6 | DC3 (dry-contact 3 input) |
| 7 | GND4 (ground) |
| 8 | DC4 (dry-contact 4 input) |
To set dry-contact inputs
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Access the page System â–¶Configuration â–¶Dry-Contact.
-
Select Enable for each dry-contact input you wish to monitor.
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Enter values for each of the parameters, then click Apply.
For more information on specific parameters, refer to the following table.
Dry-Contact Input Parameters (System â–¶Configuration â–¶Dry-Contact)
| Parameter | Description |
|---|---|
| Enable | Enable/Disable the use of the dry-contact input. When enabled, the alarm point for this input is created and the input is monitored. |
| Normal Input State | Select the normal state of the input. An alarm will be raised when the input state of the dry-contact is different from the normal state for more than three consecutive samples. Possible values are:
|
| Input Sampling Period | The time, expressed in milliseconds, between two consecutive readings of the input state. Range: 100–1000 milliseconds, expressed in steps of 100 milliseconds. |
| Name | The name to assign to the dry-contact input. Range: 1–127 characters; numbers and special characters are supported. |
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