1, 3 - left-channel trip settings;
2, 4 - right-channel trip settings;
5, 7 - green LEDS indicating that a voltage is present on the corresponding channel;
6, 8 - red LEDs indicating that a corresponding channel trips;
9,10 - contacts available for connection.
The REV-201 two-channel electronic time delay-on-make relay is designed to switch alternate 220V/50Hz current electric curcuits and direct 24 - 100V current electric curcuits with adjustable time delay from 0 to 220 sec. The relay has two channels. Each channel represents the independent time delay relay. Time delay for each channel begins when voltage is applied to the channel.
The REV-201 provides three modes of operation:
Mode 1, or the operation mode of two relays. Channels operate independently. The independent voltage is applied to each channel at different times. Time delay begins when each channel is energized;
Attention! In the «operating mode 1» power supply of both channels must use a common neutral.
Mode 2, or the operation mode of one relay with two different delays-on-make. Channels operate in parallel. One and the same power is applied to each channel simultaneously. Time delay-on-make for both channels begins simultaneously. Trip delay corresponds to delays for each channel set by controls.
Mode 3, or the summing channel operation. Power is applied from one channel output to another channel input and thus the summation of the first channel delay and the second channel delay is made.
A time delay for each channel begins when a voltage is applied to "L1-N" contacts (channel 1);"L2-N" contacts (channel 2). The time delay is set by contact arms of potentiometers. Two adjustments - in the range from 0 to 20 sec and in the range from 0 to 200 sec – correspond to each channel. A trip delay of one channel is equal to the sum of the delays set by two potentiometers. If the trip delay is less than 20 sec, the 0 - 200 sec potentiometer is set in zero position and the delay is set by the 0-20 sec potentiometer. If the trip delay is more than 20 sec, it is set by both potentiometers as the sum of trip delay settings.
When a voltage is applied to the left (right) channel, the green LED of the left (right) channel glows. It signals that the time delay begins. Tripping of the relay after the time delay has expired is indicated by glowing of red LED.
Each channel has a N. C. (normally closed) output contact and a N. O. (normally open) output contact: the 1-2 and the 4-5 are N. C. contacts, the 2-3 and the 5-6 are N. O. contacts. The «1-2-3» are the contacts of the 1 st channel, the «4-5-6» are the contacts of the 2 nd channel; both groups are two-way break-before-make contacts.
The relay with another time delay adjustment range can be supplied at the customer's request. The relay can be converted to a periodic «energization-de-energization» mode of operation where «energization-de-energization» cycles are adjusted by user. Parameters are specified by user additionally.
