Firing Pulse - Siemens SINAMICS DCM Operating Instructions Manual

Connecting
6.16 Connector assignment (terminals, Faston mounting tabs, ribbon cables)
Terminal, Function
connection
XIMP25 control for firing pulse transformers for the thyristors
IMP25 For thyristor V25
P24
X25
G, K Firing cable, thyristor V25
XIMP26 control for firing pulse transformers for the thyristors
IMP26 For thyristor V26
P24
X26
G, K Firing cable, thyristor V26
Outputs for voltage measurement
X12_1 Armature line voltage W
X14_1 Armature line voltage U
X15_1 Armature voltage 1C1
X16_1 Armature line voltage V
X25_1 Armature voltage 1D1
Module C98043-A7043, firing pulse module
6.16.8

Firing pulse

Time sequence
The time sequence for firing pulses is set via parameter p51826:
p51826[0]
p51826[1]
p51826[2]
Notes
● If p51826[0] = 105 or p51826[1] = 105: Block pulse (without pulse scrambling)
● If p51826[0] ≤ p51826[1] is set, p51826[0] will be ignored and the first pulse will have the
● p50079 is used for short pulse/long pulse selection.
p50079 = 0
p50079 = 1
134
Length of first pulse (factory setting = 50 µs)
Length of other pulses (factory setting = 35 µs)
Length of pause (factory setting = 70 µs)
same length as all the other pulses.
Short pulses, pulse length 890 µs
Long pulses, pulse duration up to 0.1 ms before the next pulse
Technical data, comments
Only to be connected if the firing pulse transformer module is divided
up (see terminal strip XIMP_4)
Firing pulse (see below) gate (G) to auxiliary cathode (K)
Only to be connected if the firing pulse transformer module is divided
up (see terminal strip XIMP_4)
Firing pulse (see below) gate (G) to auxiliary cathode (K)
When the firing cables are connected to the thyristors in the power
unit, the line and armature voltages are automatically present at the
firing pulse module (C98043-A7043).
These voltages can then be routed from here (connections X12_1,
etc.) to the voltage measurement equipment (C98043-A7117), without
having to route any additional cables to the power unit.
Please also refer to the section titled "Connecting the external power
unit".
Operating Instructions, 06.2010, C98130-A7067-A1-02-7619
SINAMICS DCM Control Module