Closed-loop thyristor current control
System- and communication configuring D7-SYS - SIMADYN D
5-27
Edition 06.2002
YHW
Fault message
→
remedy
Bit 1
Logical 0
Bit 2
∅
Fuse monitoring (Sitor)
→
check whether a fuse has failed
Bit 3
∅
Temperature monitoring (Sitor)
→
check for overtemperature
Bit 4
∅
Undervoltage (Sitor)
→
check the line supply values and connector SOL.UNM
Bit 5
∅
External pulse inhibit if a voltage is not available at the input
→
ITDC-X5:10 > 15 V
=
ˆ
pulse enable
Bit 6
∅
Logical 0
=
ˆ
Bit 7
∅
Hardware Watchdog ITDC
Causes: Defective module,
→
replace the module
Task overflow in the PMx
→
modify the configured software
Bit 8
Total pulse inhibit (display: ITDC-X5:15)
Cause: Voltage missing, SW pulse inhibit, HW-ITDC fault
→
remove the fault statuses
Bit 9-16
Logical 0
∅
= suppressed with MNE=1
Table 5-4
HW faults from the ITDC
If the group inhibit fault word is set (SOL.MNE=1), this permanently
deletes the defined bits in fault words SOL.YF1\2.
An alarm message is transformed from YW1 or YW2 into fault message
YF1 or YF2 by setting bits 1-16 at SOL.HM1 or SOL.HM2.
The closed-loop thyristor current control is switched-out by a fault
message in fault word YF1 or YF2.
Significance of
fault bits ITDC
HMH
→
YHW
Group inhibit, fault
word YF1/YF2
Fault words
YW1 ,YW2
YF1 , YF2
