HP Anab EQ5 - Manual (Page 94)

EQ5 AC Drive Operations Manual
_______________________________________________________________________
TECO – Westinghouse Motor Company Alarm Codes & Causes con’t 88
Overheating of
heat
sink
OH1 FIN OVERHEAT
Alarm activates when the following condition occurs:
• Temperature of the heatsink rises above the maximum
allowed heatsink temperature due to a cooling fan failure.
• Temperature falls below the minimum allowed heatsink
temperature.
External alarm OH2 EXT ALARM
Alarm activates when one of following conditions occur:
• Control Circuit Terminal: THR input is closed (see user
connection).
• PTC Thermal Protection is enabled (H26 = 1) and
temperature level is reached.
Inverter internal
overheating
OH3 HIGH AMB TEMP
Alarm activates when one of following conditions occur:
• Temperature inside the inverter rises above the
maximum allowed temperature. (E.g. due to poor
ventilation)
Current draw of terminal 13 exceeds 20mA (e.g. due to a
short circuit condition.)
Overheating of
braking resistor
dbH DBR OVERHEAT
Alarm activates when the following condition occurs:
Electronic thermal O/L relay is enabled (Parameter F13) and
the external braking resistor is overheating.
Motor 1
overload
OL1 MOTOR1 OL
Alarm activates when the following condition occurs:
Electronic thermal O/L relay 1 is enabled (Parameter F10)
and the motor current exceeds the motor rated current level.
Motor 2
overload
OL2 MOTOR2 OL
If the second motor current exceeds the preset level when
the operation is switched to drive the second motor, the
protective function is activated, provided that electronic
thermal O/L relay 2 of function code A04 is selected.
Inverter
overload
OLU INVERTER OL
If the output current exceeds the rated overload current, the
protective function is activated to provide thermal protection
against semiconductor element overheating in the inverter
main circuit.
Blown fuse FUS DC FUSE OPEN
If the fuse in the inverter is blown out following a short-circuit
or damage to the internal circuit, the protective function is
activated (for 40HP/CT, 50HP/VT or more only).
Memory error Er1 MEMORY ERROR
If a memory error occurs, such as missing or invalid data, the
protective function is activated.
Digital Operator
communication
error
Er2 KEYPD COM ERR
If a communication error or interrupt between the Digital
operator and control circuit is detected, the protective
function is activated.
CPU error Er3 CPU ERROR
If an CPU error occurs due to noise, etc., the protective
function is activated.
Option error
Er4 OPTN COM ERR
Error when using an optional unit
Er5 OPTION ERROR
Forced stop Er6 OPR PROCD ERR Error when using the forced stop command
Output wiring
error
Er7 TUNING ERROR
If there is an open circuit or a connection error in the inverter
output wiring during auto-tuning, the protective function is
activated.
RS-485
communication
error
Er8 RS-485 COM ERR
If an error occurs when using RS-485 communications, the
protective function is activated.