Activation Command For Holding Or Operating Brake (Low Active) - Siemens 6RA7086-6KS22 Operating Instructions Manual

Function descriptions
Sequence of operations for entering E-STOP command:
1. Enter "E-STOP" command
2. Disable ramp-function generator, n and I controllers
3. I = 0 is applied
set
4. a) U616 = 0: E-Stop has same effect as OFF2 (as soon as I = 0, the firing pulses are disabled)
b) U616 = 1: E-Stop disables the output of firing pulses immediately (without waiting for I = 0)
5. Output signal "Close operating brake" (binector B0250 = 0, when P080 = 2)
6. Converter reaches operating state o10.0 or higher
7. An "older" actual field current value (K0265) is input as the field current setpoint upper limit
(function is "released" in operating states of ≤o5)
8. Relay "Power contactor on" (terminal 109/110) drops out
9. Drive coasts to a standstill (or is braked by the operating brake)
10. Parameterizable delay time (P258) runs down
11. The field is reduced to a parameterizable value (P257)
12. When n < n
(binector B0250 = 0, when P080 = 1)
Note:
15ms after entry of "E Stop" the hardware causes relay "Power contactor on" (terminal 109/110).to
drop out (even if Item 8 of this sequence has not yet been reached).
9.9

Activation command for holding or operating brake (low active)

The signal for controlling the brake is available at binector B0250:
log. "0" state = Close brake
log. "1" state = Release brake
In order to drive a brake, this binector must be "wired up" to a binary output, e.g. by setting P771 to
250 for connection to output terminals 46 /47 (see Section 8, Sheet G112, for other possible settings).
The following parameters influence the action of the brake control signal:
P080 = 1
P080 = 2
P087
P088
P319
The following diagrams illustrate the chronological sequence of the brake control function with a signal
level change at inputs "Switch-on / Shutdown" (e.g. terminal 37) and "Operating enable " (terminal 38).
With respect to the brake control, input commands "Inching", "Crawling" or "Fast stop" have the same
affect as "Switch-on / Shutdown", and input commands "Voltage disconnection" or "E-Stop" the same
affect as cancelling the "Operating enable" command.
The command "Close brake" is output during the optimization run for precontrol and current controller
(P051 = 25).
9-18
(P370, P371) has been reached, the "Close holding brake" signal is output
min
The brake is a holding brake:
"Close brake" command is entered only when n < n
The brake is an operating brake:
The "Close brake" command is entered even when the motor is running
Brake release time:
A positive value prevents the motor from acting against the brake as it is released
A negative value causes the motor to act against the brake while it is still closed in
order to prevent the occurrence of a brief, torque-free interval
Brake closing time:
Causes the motor to produce a torque while the brake is closing
Delay time for enabling ramp-function generator
After the controllers have been enabled, a setpoint of 0 is input for the time set
here. This time should be set such that the brake has actually been released when
the timer runs down. This is of particular importance when P087 is set to a
negative value.
(P370, P371)
min
SIEMENS AG
SIMOREG DC Master Operating Instructions
05.05
6RX1700-0AD76