®
2007
1/2
Phase line IN/OUT
3/4
Neutral line IN/OUT
5 and 6 Test pulse output contact
1.9 Operating
Consumption indication
There is a red LED which is used as indicating power consumption in the front panel of
PRO-75 series. When consumption happens, the LED will flash. The more quickly LED
flashes, the more consumption there is.
Reverse indication
A red LED will illuminate to indicate the meter is connected in reverse way.
Reading the meter
The PRO-75A series energy meter is equipped with a 5+1 register. Five integers are
marked with black color and one decimal is marked with red. The PRO-75D series
energy meter is equipped with 5+2 LCD display which is used as recording
consumption and can’t be reset to zero. The reading accuracy is 1/100 kWh.
Pulse output
The PRO-75 SERIES DIN rail energy meter is equipped with a pulse output which is fully
separated from the inside circuit. That generates pulses in proportion to the measured
energy for accuracy testing. The pulse output is a polarity dependant, passive
transistor output requiring an external voltage source for correct operation. For this
external voltage source, the voltage (Ui) should be 5-27V DC, and the maximum input
current (Imax) is 27mA DC.
To connect the impulse output, connect 5-27V DC to
connector
6
(anode), and the signal wire (S) to connector 5 (cathode).
1.10 Troubleshooting
CAUTION
?
During repa ration and maintenance, do not touch the meter connecting
clamps directly with your bare hands, with metal, blank wire or other
material as you will have the chance of an electricity shock and a possible
chance for health damage.
?
Turn off and lock out all power supplying the energy meter and the
equipment to which it is installed before opening the protection cover to
prevent the hazard of an electric shock.
WARNING
?
Maintenance or reparations should be performed by qualified personnel
familiar with applicable codes and regulations.
?
Use insulat ed tools to maintain or repair the meter.
?
Make sure the protection cover is in place after maintenance or repair.