9
SEP LEMO12SD / LEM012SS 2015
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 2000 per kWh (0.5Wh/imp).
1.10 Troubleshooting
CAUTION
During repair 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 electric shock.
WARNING
Maintenance or repair should be performed by qualified personnel familiar
with applicable codes and regulations.
Use insulated tools to maintain or repair the meter.
Make sure the protection cover is in place after maintenance or repair.
Case is sealed, failure to observe this instruction can result in damage for
meter.
Problem
Check
Solution
No light for the
Power supply
indicator.
Is AC power supply
connected to the
meter ?
Is the 1 and 4
connecting correct ?
Maybe there is a
fault in the inside
circuit.
Check switch or circuit-breaker
and fuse or thermal cut-off.
Reinstall terminal screws on the 1
and 4. Make sure all screws are
fixed. Than there should be a
230V 50Hz AC voltage between
the terminal screws on the 1 and
4 when power supply is input.
Contact a qualified technician.
When necessary replace the
meter.