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© 2011 Schneider Electric All Rights Reserved.
ZL0093-0A
11/2011
EM3555
Troubleshooting
TROUBLESHOOTING
Table 10 Troubleshooting
Problem Cause Solution
The maintenance wrench
icon appears in the power
meter display.
There is a problem with the
inputs to the power meter.
See the Alert sub-menu or the Diagnostic Alert Modbus Register 146
The display is blank after
applying control power to
the meter.
The meter is not receiving
adequate power.
Verify that the meter control power is receiving the required voltage.
Verify that the heart icon is blinking.
Check the fuse.
The data displayed is
inaccurate.
Incorrect setup values Verify the values entered for power meter setup parameters (CT and PT
ratings, system type, etc., see Setup section).
Incorrect voltage inputs Check power meter voltage input terminals to verify adequate voltage.
Power meter is wired
improperly.
Check all CTs and PTs to verify correct connection to the same service,
CT and PT polarity, and adequate powering (see Wiring Diagrams
section).
Cannot communicate with
power meter from a remote
personal computer.
Power meter address is
incorrect.
Verify that the meter is correctly addressed (see Setup section).
Power meter baud rate is
incorrect.
Verify that the baud rate of the meter matches that of all other devices
on its communications link (see Setup section).
Communications lines are
improperly connected.
Verify the power meter communications connections (see
Communications section).
Verify the terminating resistors are properly installed on both ends
of a chain of units. Units in the middle of a chain should not have a
terminator.
Verify the shield ground is connected between all units.
Sign of one phase (real
power) is incorrect
CT orientation reversed Remove CT, reverse orientation, reconnect (qualied personnel only)
CHINA ROHS COMPLIANCE INFORMATION (EFUP TABLE)
部件名称
产品中有毒有害物质或元素的名称及含量Substances
铅 (Pb) 汞 (Hg) 镉 (Cd) 六价铬 (Cr(VI)) 多溴联苯(PBB) 多溴二苯醚(PBDE)
电子线路板 X O O O O O
O = 表示该有毒有害物质在该部件所有均质材料中的含量均在 SJ/T11363-2006 标准规定的限量要求以下.
X = 表示该有毒有害物质至少在该部件的某一均质材料中的含量超出SJ/T11363-2006标准规定的限量要求.
Z000057-0A