HIGH/LOW VOLTAGE MONITOR (668 series) SETTING INFORMATION.
DATA SHEET AVAILABLE THROUGH THIS LINK.
Use in accordance with supplied product documentation.
The 668 High/Low Voltage monitor is
designed to measure dc voltages and de-energise one of two relays if the
measured potential rises above or falls below a pre-set limit.
SETTING THE HIGH VOLTAGE
DETECTOR. To set the high voltage monitor
a DC voltage at the required tripping level must be applied to
the alarm using pins 2 (-) and 10 (+). The potentiometer VR1 is
adjusted until the red PCB mounted led 2 illuminates.
Verification of a correct setting is made by adjusting the supply
voltage 0.5V negative to the required trip point where the relay
RL1 will change state. SETTING THE LOW VOLTAGE
DETECTOR. To set the low voltage monitor
a DC voltage at the required tripping level must be applied to
the alarm using pins 2 (-) and 10 (+). The potentiometer VR2 is
adjusted until the red PCB mounted led 1 illuminates.
Verification of a correct setting is made by adjusting the supply
voltage 0.5V positive to the required trip point where the relay
RL2 will change state.
HLVM668-01