Oriental motor BLVD20KM - MB-FREE input; Output signals; SPEED-OUT output; ALARM-OUT1 output

Connection
−28−
•
MB-FREE input
This input signal is used for the electromagnetic brake type products. It is used to select how the electromagnetic
brake would operate when the motor stops.
When the MB-FREE input is ON, the electromagnetic brake is released.
When the MB-FREE input is OFF, the electromagnetic brake is activated to hold the shaft in position.
Note
The MB-FREE input is disabled while an alarm is present.

Output signals
The signal state represents "ON: Carrying current state" or "OFF: Not carrying current state" of the internal
photocoupler rather than the voltage level of the signal.
•
SPEED-OUT output
30 pulses are output with each revolution of the motor output shaft in synchronization with the motor operation.
The pulse width of output pulse signals is 0.2 ms. The motor rotation speed can be calculated using the SPEED-OUT
output.
Mot
or shaft speed (r/min) =
SPEED-OUT output frequency
30
× 60
SPEE
D-OUT output frequency (Hz) =
1
T
T
0.2 ms
•
ALARM-OUT1 output
When the protective function of the driver is activated, the ALARM-OUT1 output is turned OFF and the ALARM LED
blinks (normally closed). The motor coasts to a stop in the case of the standard type. In the case of the electromagnetic
brake type motor, on the other hand, the electromagnetic brake is activated to hold the shaft in position (the motor
stops immediately).
To reset an alarm, turn both the FWD input and REV input OFF, and remove the cause of the alarm before turning the
ALARM-RESET input ON (keep it ON for 10 ms or more) and then OFF. The ALARM-RESET input is disabled while the
FWD input or REV input is being ON.
If the alarm cannot be reset with the ALARM-RESET input, turn o the main power supply and turn on it again. If the
control power supply is used, also turn on the control power supply again.
ALARM-OUT1 output
ON
OFF
ALARM-RESET input
ON
OFF
FWD input
Motor operation
ON
OFF
10 ms or more
10 ms or less
Stop
Elec
tromagnetic brake operation∗
Release
Release
Lock
10 ms or more
Alarm generation
Rotation
Stop
∗*
The electromagnetic brake holds the position at the same time when an alarm is generated. If the
MEXE02
or
OPX-2A
is used,
the electromagnetic brake can be set to hold the position after the motor coasts to a stop.