Activating The Electromagnetic Brake (Mbr Signal, Pr. 736) - Mitsubishi Electric FR-D720-0.2K-G Instruction Manual

4.10.3 Activating the electromagnetic brake (MBR signal, Pr. 736)

Use the Electromagnetic brake interlock (MBR) signal to activate the electromagnetic brake.
Parameter
Name
Number
Electromagnetic brake
736

interlock time
* This parameter can be set when Pr. 160 Extended function display selection = "0".
To obtain an interlock with the electromagnetic brake operation, set a delay time between the electromagnetic brake
interlock (MBR) signal output and the actual operation start in Pr. 736 Electromagnetic brake interlock time.
The interlock time set in Pr. 736 is enabled even if the MBR signal is not assigned. Set Pr. 736 = 0 if the interlock time
setting is not required.
Additionally configure an external circuit, which can also command an emergency stop to the electromagnetic brake.
For the terminal used for MBR signal, set "21 (positive logic)" or "121 (negative logic)" in Pr. 190 or Pr. 192 (output terminal
function selection).
Power supply for
electromagnetic brake
Power
supply
STF
RH
(r/min)
Reset operation
RY
RUN
MBR
Electromagnetic brake
operation

The release timing of the electromagnetic brake is delayed for the electromagnetic brake release time and the operation time of the relays,
etc. in external circuits.

The operation timing of the electromagnetic brake is delayed for the electromagnetic brake delay time and the operation time of the relays,
etc. in external circuits.

When the drive unit is set as Pr. 10 = "0r/min" and Pr. 11 = "0.0s", its outputs are shut off when the speed reaches 0r/min during dceleration,
and the motor starts coasting.
Drive
Start Signal
Unit
Status
OFF (During
Output
a Stop)
Signal
RY
RUN
MBR
* During a fault occurrence, or while the MRS signal is ON.
Initial
Value
0s
Electromagnetic
Fault output
brake interlock
(ALM)
(MBR)
ON
ON
ON
Initial magnetic pole detection
Pr. 736
(approx. 100ms)
ON
Release delay time +
external relay, etc. ∗1
Operated
During a Stop
(No Speed
Setting)
ON ON
OFF OFF
OFF OFF
Motor brake and stop operation
Setting Range
Set the waiting time between the initial magnetic pole
detection start and the MBR signal output at drive unit
0 to 1s start-up.
Set the release delay time (including relay operation
delay) of the electromagnetic brake or longer.
Emergency stop
B
DC injection
brake operation*3
ON
ON
Open
Start signal ON
During a Stop
(With a Speed Running
Setting)
ON ON
OFF ON
ON ON
Description
Motor
Electromagnetic
brake
Time
Brake delay time +
∗2
external relay,
Operated
DC
Injection Output
Brake Shutoff
Activated
ON OFF
OFF OFF
ON OFF
4

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