Malfunctions And Warnings; Fault Signals - Siemens SIMOVERT Master Drives Betriebsanleitung

02.04
7

Malfunctions and warnings

7.1

Fault signals

The fault relay K760 at terminals X9-4 and X9-5 interrupts.
The LEDs only serve the purpose of diagnostics. Their indications are volatile.
Signal
SUPP. OK. (green) not lit
EARTH FLT. (red) lit
PHASE FAIL. (red) lit
EXC. VOLT. (red) lit
EXC. TEMP. (red) lit
If one of these faults occurs, the pulses are blocked immediately and the ramp-function generator is reset. If
the fault lasts for longer than 100 ms, the fault relay drops out and remains dropped out until the fault is
acknowledged.
The fault is acknowledged by switching off the supply voltage (pause > 100 ms) or the electronics power
supply (pause > 200 ms) and switching them on again, e.g. by means of short-time jumpering of the fault
contact (see ON button in Fig. 3.4).
Table for the excess voltage fault signal:
Unit order number
6SE70..-.EE85-0AA0
6SE70..-.FE85-0AA0
6SE70..-.HE85-0AA0
The S500 switch is located on board A23.
Siemens AG 6SE7087-6AE85-0AA0
Common Rectifier Operating instructions
Description
Electronic power supply is less
than DC 20 V or the internal
generation of auxiliary voltages is
defective.
Earth fault at the output of a
converter before precharging
longer than for 2 seconds
Phase failure for longer than 1
second
Excess voltage for longer than 4
ms
Excess temperature of the power
section
Switching threshold = 90°C ±5°C
Rated ac-side voltage range
S500 closed S500 open
AC (V) AC (V)
200 - 230 380 - 480
500 - 600
— 660 - 690
(not double rectifiers)
Remedy
Check the 20 to 30 V electronic
power supply; check fuses F1 and
F2.
Eliminate earth fault or extreme
soiling
Wait for 2 minutes until PTC test
thermistors have cooled down.
Check mains connections
Check rated ac-side voltage and unit
setting (S500)
Reduce current tapping; check air
throughput; check ingoing air
temperature
Excess voltage when
S500 closed
AC (V)
>270
— >680
not intended
Malfunctions and warnings
Excess voltage
when
S500 open
AC (V)
>548
not permitted
>867
7-1
ENGLISH