Connecting dry contact outputs & Dry outputs panel
Content
Introduction
Some Vutlan monitoring systems have optically isolated dry contact output terminals (VT855t Data Center Monitoring System ). It allows the system to send alarm and alert signals.
You can send a signal to a UPS, diesel generator, circuit breaker, control panel, alarm system, and other industrial equipment.
Keywords: #voltage outputs, #alarm outputs,
Schematics
VTx40 has x8 isolated dry contact outputs. Max possible voltage is 24V DC / and current 30 mA.
VTx40 uses an LTV817S photocoupler.
How to configure Dry contact outputs in the Web Interface
Contacts can be controlled inside the "Dry Outputs" panel. The initial state can be configured.
Dry contact panel settings
Page included Dry contacts settings panel
Other pages of interest
"Connecting dry contacts inputs".
Using Groups
There can be a lot of dry contacts and sometimes you just want one triggered event for many of them at the same time. You can create a group and place multiple dry contacts into it. Any element in the group will trigger an event such as a notification for example.
https://vutlan.atlassian.net/wiki/spaces/DEN/pages/57081871
Introduction
For internal contacts, you can specify the type of behavior (normal or reversive) and specify the type of input. "User-defined type" only affects the icon in the interface. Types can be the following: airflow, door, motion, smoke, vibration, water, and no special type (by default).
For dry contacts on the CAN bus, "Alarm" duration control is also available. This holds on an active level when the signal is already removed from the input. This allows you to suppress the instability of the input signal, if necessary.
The dry contacts window is designed to control dry contacts of internal dry inputs, VT440, VT16, and other extensions. The general view is shown here:
To create the logic for an arbitrary group of contacts press the button "" in the upper left corner. This starts with a wizard creating a logic circuit.
As the first step of the wizard, you must select the dry contacts to create a logical circuit.
After you click OK, you are prompted to create a trigger.
The trigger can be not created. But in this case, in "THEN" the logic circuit can be used only existing elements.
As the last step, you need to edit and create a logic circuit with the OK button.
Do not forget to save all new settings and logic circuits into flash memory by clicking "" in the right top corner of the interface!