DRT-370D user manual
Shanghai Fengyilong Electronic Co. Ltd.
www.china-meters.com
-8-
Email:[email protected]
m
021-60975591/ 60975592
Pulse output
The DRT-370D 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 remote reading purposes and 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 is 5-27V DC, and
the maximum input current (Iimax) is 27mA DC. To connect the impulse output,
connect 5-27V DC to connector 20 (anode), and the signal wire (S) to connector 21
(cathode). The meter pulses 800 per kWh (1.25Wh/imp).
1.10 Troubleshooting
CAUTION
¾
During repairing 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.
¾
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 electric shock.
WARNING
¾
Maintenance or repair should be performed by qualified personnel familiar
with applicable codes and regulations.
¾
Use insulated tools to maintain or repair the meter.
¾
Make sure the protection cover is in place after maintenance or repair.
