Mitsubishi Electric MELSEC-Q Series User Manual page 83

Applicable tightening
torque
Couple de serrage à
appliquer
External dimension
Weight
POINT
*1 Overcurrent protection
The overcurrent protection device shuts off the 5VDC and/or 24VDC circuit(s) and stops
the system if the current exceeding the specified value flows in the circuit(s). As this
results in voltage drop, the power supply module LED turns off or is dimly lit. After that,
power off the input power supply to eliminate the causes of overcurrent, e.g., insufficient
current capacity and short circuit, and then power on the input power supply to start the
system. When the current has reached the normal value, the initial start up of the system
will be performed.
*2 Overvoltage protection
The overvoltage protection shuts off the 5VDC circuit and stops the system if the
overvoltage of 5.5V is applied to the circuit. This results in the power supply module LED
turning off. When restarting the system, power OFF and ON the input power supply, and
the initial start up of the system will be performed. If the system is not booted and the
LED remains off, this means that the power supply module has to be replaced. the LED
remains off, this means that the power supply module has to be replaced.
*3 Allowable momentary power failure period
The programmable controller CPU allowable momentary power failure period varies
with the power supply module used. In case of the A1S63P power supply module, the
allowable momentary power failure period is defined as the time from when the primary
side of the stabilized power supply for supplying 24VDC to the A1S63P is turned off until
when the voltage (secondary side) has dropped from 24VDC to the specified value
(15.6VDC) or less.
*4 Inrush current
If the power supply module is re-powered on right after powered off (within 5s), the
inrush current exceeding the specified value (2ms or less) may be generated.
Therefore, make sure to re-power on the module 5seconds after power off. When
selecting a fuse or breaker for external circuit, consider the above point as well as
meltdown and detection characteristics.
Power Supply Module Specifications
130 × 55 × 93.6 (5.12 × 2.17 × 36.9)
0.60 kg
49
59 to 88N•cm
59 à 88N•cm
0.60 kg
mm (inches)
0.50 kg