Siemens 6RA70 Setting values for converter control, 10-17, P080 Control word for brake control

PNU

Description

Value range [Unit] Steps

No. indices Factory setting Type

See Change (Access / Status)

10.5Setting values for converter control

P080	Control word for brake control
*	1	The brake is a holding brake
(G140)		When the "Operating enable" command is cancelled or when
		the "Voltage disconnection" or "E-Stop" command is input, the
		"Close brake" command is not input until n< nmin (P370, P371)
		is reached.

2The brake is an operating brake

When the "Operating enable" command is cancelled or when the "Voltage disconnection" or "E-Stop" command is input, the "Close brake" command is input immediately, i.e. while the motor is still rotating.

P081	EMF-dependent field weakening
*	0	No field-weakening operation as a function of speed or EMF
		(100% of rated motor field current is applied constantly as the
(G165)		internal field current setpoint).

1Field-weakening operation by internal closed-loop EMF control to ensure that in field-weakening operation, i.e. at speeds above the motor rated speed (="field-weakening activation limit speed”), the motor EMF is maintained constantly at the setpoint EMFset (K0289) = P101 – P100 * P110 (field current setpoint is the product of the EMF controller output and the precontrol component determined by the actual speed according to the field characteristic).

NOTICE

When P081=1, a valid field characteristic must be available (P117=1), otherwise the optimization run for field weakening (P051=27) must be executed.

1 to 2

0 to 1

1

Ind: None	P052	= 3
FS=1	P051	= 40
Type: O2	Offline

Ind: None	P052	= 3
FS=0	P051	= 40
Type: L2	Offline

SIEMENS Energy & Automation	10-17
SIMOREG DC Master Base Drive Panel Operating Instructions