The REV-120 time relay is a microprocessor-based device designed to switch the load on and off at user-defined intervals.
The device is mounted on a standard din rail and takes up only one module in the panel.

The device has two output channels with normally open and normally closed contacts. Also on the front of the device are: a time interval setting regulator ‘ΔT’, a time setting regulator ‘T’, a mode setting regulator ‘W’.

REV-120 has ten operating modes:

• Delay to switch on
• Time delay when power is applied
• Periodic with a delay when switching on
• Intermittent with time delay when switching on
• Delayed switch-off (when the control contact is disconnected)
• Pulse 1 (when the control contact closes)
• Pulse 2 (when the control contact is open)
• On-off delay (by control contact)
• Load relay step (each time the control contact closes)
• Pulse generator 0.5 s
• The table of modes and time intervals is located in the device passport
• Before connecting the device, it must be configured

The time relay is set up in the following order:

first, set the operating mode (move the mode setting knob to the leftmost position, regardless of the position of the knob, and then set the required mode clockwise), then set the time interval with the ‘ΔT’ knob, then set the time with the ‘T’ knob.

It should be noted that when changing the operating mode or time intervals of the product at the supplied supply voltage, it should be borne in mind that the changes will take effect only after switching off (for at least 1 s) and switching on the product again.