Closed-loop thyristor current control
5-22
System- and communication configuring D7-SYS - SIMADYN D
Edition 06.2002
The controlled test mode is selected with input SOL.ISE = 1. The FB-PC6
firing angle controller immediately executes firing angle PC6.AQL. The
torque direction is derived from the sign of the current setpoint if a torque
direction (SOL.ON1 , .ON2) was not forced.
For the torque changeover, the switch-over logic stage sets the current
controller (CPI.SV) to the voltage actual value of the
EMF
, refer to the no-
load amplitude, using the signal SOL.QCS. The
EMF
can also be set, for
the current controller as EMF pre-control angle (CPI.SVC=1), into the
“continuous tracking” mode.
NOTE
To enable the pulses, a jumper ITDC -X5:7 \ 10 must be inserted.
An “open-circuit” input is interpreted as “external hardware pulse
inhibit” and causes the pulses to be immediately inhibited!
SOL.
Significance
Value\connection
AD
Hardware address
TH0
Thyristor hold-off time [ms]
Condition: 0.5 ms
≤
TH0
≤
131 ms, otherwise, YW2\bit10=1
(Initialization connection/
default: 10
ms)
TCP
Thyristor pulse suppression time [ms]
Condition: 0.0 ms
≤
TH0
≤
20000 ms, otherwise, YW2\bit10=1
(Initialization connection/
default: 2 ms)
TCD
Monitoring time for torque change M1
⇔
M2
(inverse > (TCP + THO + TCD)
⇒
fault)
(Default: 50 ms)
IPL
Pulse inhibit = 1 is immediately effective!
(this is the same as the hardware pulse inhibit ITDC–X5:10.)
(At high currents and speed this can result in inverter
commutation faults.)
(Default: 0)
UNM
Mode: Handling the undervoltage condition (Sitor)
UNM=0: Undervoltage signal as alarm (YW1\bit 6)
UNM=1: Transition into the status: Pulse inhibit
UNM=2: Transition into the status: Pulse i
total pulse inhibit (HW-ITDC)
(Default: 2)
ION
On command for the closed-loop thyristor current control,
only if IOF = 0. ION is only level controlled!
A transition from off
⇒
operation is only realized if the
sum of the setpoints WC1+WC2
≥
WCL.
(Default: 0)
IOF
Off command for the closed-loop thyristor current control
IOF has priority over all of the other control inputs.
(Default: 0)
ON1
Enable, only torque direction M1,
for OF1 = 0 & OF2 = 0
(Default: 0)
OF1
Off command, torque direction M1
For QON = 1, only negative setpoints are executed.
(Default: 0)
ON2
Only enables torque direction M2,
for OF2 = 0 & OF1 = 0
(Default: 0)
OF2
Off command, torque direction M2
For QON = 1, only positive setpoints are executed.
(Default: 0)
Test mode
Changing-over the
torque direction
I/O