Remedy
Description/cause
Indication on display
●
Enable EMERGENCY stop switch.
●
Reset EMERGENCY stop state by means
of Reset command.
The EMERGENCY stop switch has been op-
erated. The motor control power supply (con-
tactors or thyristors) is disconnected.
EMCY stop active
●
Detect cause for EMERGENCY signal.
●
Verify failure source.
●
Apply +24 V DC at EMERGENCY input.
Operation mode EMERGENCY is active
(EMERGENCY signal was sent).
0 V are applied at the EMERGENCY input.
EMCY behav. active
Check I/O interface.
The actuator is controlled via the I/O interface
(parallel).
I/O interface
Start motor operation.
Manual operation is activated.
Handwheel active
Check interlock signal.
An interlock is active.
Interlock
Check states of main and by-pass valve.
By-pass function is interlocked.
Interlock by-pass
Wait until PVST function is complete.
Partial Valve Stroke Test (PVST) is active.
PVST active
10.3.
Fuses
10.3.1.
Fuses within the actuator controls
Fuses used
F1/F2
Primary fuses on power supply unit
AUMA art. no.
F1/F2
G fuse
6.3 x 32 mm
Size
K002.277
1 A T; 500 V
Reversing contactors
Power supply
≤
500 V
K002.665
2 A FF; 690 V
Reversing contactors
Power supply > 500 V
K002.277
1 A T; 500 V
Thyristor units for motor power up to 1.5 kW
Thyristor units for motor power up to 3.0 kW
Thyristor units for motor power up to 5.5 kW
F3
Internal 24 V DC supply
AUMA art. no.
F3
G fuse according to IEC 60127-2/III
5 x 20 mm
Size
K006.106
2.0 A T; 250 V
Voltage output (power supply unit) = 24 V
K006.106
2.0 A T; 250 V
Voltage output (power supply unit) = 115 V
F4
Internal 24 V AC supply (115 V AC) for:
●
Heater, switch compartment, reversing contactors control
●
PTC tripping device
●
for 115 V AC also control inputs OPEN - STOP - CLOSE
AUMA art. no.
F4
G-fuse according to IEC 60127-2/III
5 x 20 mm
Size
K001.184
1.25 A T; 250 V
Voltage output (power supply unit) = 24 V
—
—
Voltage output (power supply unit) = 115 V
F5
Automatic reset fuse as short-circuit protection for external 24 V DC supply for
customer (see wiring diagram)
Replace fuses F1/F2
Hazardous voltage!
Risk of electric shock.
→
Disconnect device from the mains before opening.
52
SQ 05.2 – SQ 14.2/SQR 05.2 – SQR 14.2 Control unit: electronic (MWG)
Corrective action
AC 01.2 Non-Intrusive