Siemens 6RA70 specifications 10-31

PNU

Description

Value range [Unit] Steps

No. indices Factory setting Type

See Change (Access / Status)

P154	Set armature current controller I component to zero
*	0	Set controller I component to zero (i.e. to obtain pure P
FDS
		controller)
(G162)
	1	Controller I component is active
P155	Armature current controller P gain
FDS	Proportional gain of armature current controller
	This parameter is automatically set during the optimization run for precontrol
(G162)	and current controller (armature and field) (P051=25).
	See also parameter P175
P156	Armature current controller reset time
FDS	This parameter is automatically set during the optimization run for precontrol
	and current controller (armature and field) (P051=25).
(G162)	See also parameter P176
P157	Control word for current setpoint integrator
*	0	Reduced gearbox stressing
FDS
		The integrator is active only after a change in torque direction
(G162)		(acts as ramp-function generator for armature current setpoint
		only until the output reaches the setpoint at the integrator input
		for the 1st time after a change in torque direction).

1Current setpoint integrator

The integrator is always active (acts as ramp-function generator for the armature current setpoint)

P158	Ramp-up time for current setpoint integrator (reduced gearbox
FDS	stressing)
	Period of an acceleration ramp with a setpoint step change from 0% to
(G162)	100% at r072.002.
	For older DC machines (i.e. unsuitable for steep rates of current rise),
	P157=1 and P158=0.040 must be set.
P159	Switchover threshold for auto-reversing stage (armature)
FDS		requested torque direction
(G163)		0.05%
		I
		0	Speed controller output
		II
		P159
P160	Additional torque-free interval
FDS	Additional torque-free interval for torque direction change in 4Q operation.
	It is particularly important to set this parameter to values of > 0 for converter
(G163)	armatures which supply large inductances (e.g. lifting solenoids).
P161	Additional Alpha W pulses with disabled second pulses
FDS	Number of additional Alpha W pulses with disabled second pulses after
	detection of I=0 message prior to a change in torque direction.
(G163)	It is particularly important to set this parameter to values of > 0 for converter
	armatures which supply large inductances (e.g. lifting solenoids).
	These pulses cause the current to decay prior to a change in torque
	direction. When it drops below the thyristor holding current value, the
	current is suddenly chopped by the unfired second thyristor and the residual
	energy stored in the load inductor must be dissipated via a suppressor
	circuit (e.g. a varistor) to prevent the load inductor from producing a surge
	voltage. See also P179.
P162	EMF calculation method for armature precontrol
*	0	The EMF derived from the measured armature voltage is
FDS
		applied
(G162)	1	The EMF derived from the calculated armature voltage is
		applied
		(the purpose of this setting is to prevent the occurrence of any
		low-frequency (< 15 Hz) armature current fluctuations)

0 to 1

1

0.01to 200.00

0.001 to 10.000 [s]

0.001s

0 to 1

1

0.000 to 1.000 [s]

0.001s

0.00to 100.00

[%]

0.01% of n controller output

0.000 to 2.000 [s]

0.001s

0 to 100

1

0 to 1

1

Ind: 4	P052	= 3
FS=1	P051	= 40
Type: O2	Offline
Ind: 4	P052	= 3
FS=0.10	P051	= 40
Type: O2	Online
Ind: 4	P052	= 3
FS=0,200	P051	= 40
Type: O2	Online
Ind: 4	P052	= 3
FS=0	P051	= 40
Type: O2	Offline

Ind: 4	P052	= 3
FS=0.000	P051	= 40
Type: O2	Online
Ind: 4	P052	= 3
FS=0.01	P051	= 40
Type: O2	Online

Ind: 4	P052	= 3
FS=0.000	P051	= 40
Type: O2	Online
Ind: 4	P052	= 3
FS=0	P051	= 40
Type: O2	Online

Ind: 4	P052	= 3
FS=1	P051	= 40
Type: O2	Offline

SIEMENS Energy & Automation	10-31
SIMOREG DC Master Base Drive Panel Operating Instructions