Voltage relay
riese electronic
These devices are voltage relays for monitoring AC or DC voltages. They can be used for various cotrol and monitoring tasks in electrica
systemes, e.g. over- or undervoltage protection for electric drivers,valves, welding equipment, emergency power supplies as well as othe
electrical loads and generators. These voltage relays can also be employed as motor standstill automatic controllers. The inverse voltage
s measured when the motor is switched off. The device signals stands still when the inverse voltage generates drop to the set values,
depending on the setting of jumper X1-X2.
When applying an exciting voltage to terminal A1 and A2 the devices are ready for operation. The input voltage circuit is connected to
erminal B1 and B2. The polarity must be taken into account in case of DC voltage monitoring (+ B1, - B2). The industrial relay function
can be programmed via a jumper X1-X2. When a jumper is fitted, the output relay is in the off position, i.e. the relay attracts in case of an
excess voltage. Without a jumper the function is reversed.
The value to be set at the voltage relay is related to:
- the DC voltage applied to B1/B2 in case of DC measurement,
- the effective value of the sine-wave AC voltage applied to B1/B2 for AC voltage.
he types RS-190-4 and RS-191-4 have an additional energization suppression. The energization voltage are suppressed
ollowing an interruption in the power supply or upon switching on the device. They do not lead to malfunctioning for a
period of 8 s.
