Datasheet

120
ALARM Output (Thermal Protector Open Detection)
Since the SB50W ALARM output function detects the operations
of the thermal protector, the current flowing in the motor is
monitored. Operation occurs under the following conditions:
When the thermal protector built-in to the motor is opened
When there is improper connection/disconnection of the power
supply cable and motor cable
When the input signal is turned "ON" before the AC power is
turned on
When the AC power is turned off while the motor is in operation
or while it is stopped
In the above conditions, state of the SB50W ALARM output is
"OFF," the ALARM indicator lamp (red) on the panel lights up, and
power supply to the motor is stopped.
With electromagnetic brake motors, the brake is activated in order
to hold the load in position.
When the DC power is turned on, the alarm indication lamp lights up instantaneously, but
this is not an abnormality.
Limiting Resistor
2.7 k or more
24 VDC
External Controller
Brake Pack
GND
ALARM Output
Photocoupler
7
9
Use a power source of 26.4 VDC or less, and limit the output current to 10 mA or less.
Operating/Braking Repetition Cycle
The repeated operation and braking of a motor will cause about a
temperature increase in the motor and brake pack, thereby limiting
the continuous operating time.
Observe the repetition cycle given in the table below for the
operation and braking of the motor. The motor may generate heat
depending on the conditions in which it is driven. Ensure that the
temperature of the motor case does not exceed 90˚C.
Motor Output Power Repetition Cycle
1 W

25 W 2 seconds or more
40 W

90 W 4 seconds or more
(A repetition cycle of two seconds represents operation for one second and stopping for one
second.)
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왎
World
K
Series