P083 Selection Of Actual Speed Value; P084 Selection Of Closed-Loop Speed / Current Or Torque Control; P085 Wait Period After Cancellation Of Inching Command; P087 Brake Release Time - Siemens 6RA70 Series Instructions Manual

PNU Description
P083 Selection of actual speed value
*
0 Actual speed value is not yet selected (fixed value 0%)
FDS
1 Actual speed value supplied by "Main actual value" channel
(K0013) (terminals XT.103, XT.104)
(G151)
2 Actual speed value supplied by "Actual speed from pulse
encoder" channel (K0040)
3 Actual speed value supplied by "Actual EMF" channel (K0287),
but weighted with P115 (operation without tacho)
Note:
The effectiveness of the overspeed monitoring function (see
Section 8, function diagram G188) is restricted, since very high
motor speeds can be reached if the EMF is utilized as the actual
speed value when the actual field current value is too low.
4 Actual speed value is wired up freely (selected in P609)
P084 Selection of closed-loop speed / current or torque control
*
1 Operation under closed-loop speed control
2 Operation under closed-loop current / torque control
(G160)
The setpoint supplied by the ramp-function generator output is
input as a current or torque setpoint (speed controller is
bypassed)
P085 Wait period after cancellation of inching command
After an inching command has been cancelled, the drive dwells in operating
state o1.3 for the time period set in this parameter with the controllers
disabled, but the line contactor closed. This wait period does not commence
until n<n min (P370, P371) is reached. If a new inching command is input
within this period, then the drive switches to the next operating state (o1.2 or
lower). However, if the time runs out without a new inching command being
entered, then the line contactor drops out and the drive switches to
operating state o7 (see also Section 9).
P086 Voltage failure period for automatic restart
If the voltage fails (F001, F004) at one of the terminals 1U1, 1V1, 1W1, 3U1,
3W1, 5U1 or 5W1, or if it drops below a certain threshold (F006
undervoltage) or exceeds a certain threshold (F007 overvoltage), or its
frequency is too low (F008 frequency < P363) or too high (F009 frequency >
P364), or if the actual field current drops to below 50% of the field current
setpoint for more than 0.5s (F005), then the corresponding fault message is
activated only if the fault condition has not been eliminated within the
"Automatic restart" period set in this parameter.
The gating pulses and controllers are disabled while the fault conditions are
present. The converter dwells in operating state o4 (in the case of armature
line voltage fault) or o5 (in the case of field line voltage or field current fault)
or in o13.
Setting this parameter to 0.00s deactivates the "Automatic restart" function.
NOTE:
Setting values higher than 2.00s are effective only in relation to the voltages
at terminals 1U1, 1V1, 1W1, 3U1 and 3W1.
A "restart time" of 2.00 s is operative in this case for the voltage at terminals
5U1 and 5W1 (electronics power supply).
P087 Brake release time
-10.00 to -0.01 s
(G140)
The "Release brake" command is delayed in relation to enabling of the
gating pulses for thyristors and controllers (i.e. operating state I, II or --) by
the delay time set in this parameter. During this period, the motor rotates
against the closed brake. This setting is useful, for example, for vertical
loads.
0.00 to +10.00 s
When a "Switch-on" or "Inching" or "Crawling" command is input with
"Operating enable", the drive dwells in operating state o1.0 for the delay
period set in this parameter; the internal controller enabling signal, and thus
enabling of the thyristor gating pulses, do not take effect until the delay
period has elapsed so as to give the holding brake time to open.
SIEMENS Energy & Automation
SIMOREG DC Master Base Drive Panel Operating Instructions
Value range No. indices
[Unit] Factory
Steps setting
Type
0 to 4 Ind: 4
1 FS=0
Type: O2
1 to 2 Ind: None
1 FS=1
Type: O2
0.0 to 60.0 Ind: None
[s] FS=10.0
0.1s Type: O2
0.00 to 10.00 Ind: None
[s] FS=0.40
0.01s Type: O2
-10.00 to 10.00 Ind: None
[s] FS=0.00
0.01s Type: I2
See
Change
(Access /
Status)
P052 = 3
P051 = 40
Offline
P052 = 3
P051 = 40
Offline
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
10-19