User`s manual
Part names Power supply modules
MELSEC System Q, Hardware 7 – 5
No. Name Application
POWER LED Operation indication:
ON (green): Normal (5 V DC output)
OFF:
– DC power supply is not on
– blown fuse
– Power failure (including an momentary power failure longer than the
allowable momentary power failure period)
– DC power supply is on but the power supply module is out of order.
(5 V DC error, overload, internal circuit failure)
ERR terminal
Error output (max. 24 V, 0.5 A)
Turns on when the entire system operates normally.
Turns off (opens) when
a stop error (including reset) occurs in the CPU module
AC power is not supplied
the fuse is blown.
In a multiple CPU system, turns off when a stop error occurs in any of the CPU
modules.
Normally off when mounted on an extension base unit.
FG terminal Ground terminal connected to the shield pattern of the printed circuit board.
LG terminal Grounding for the power supply filter.
Power input termi-
nals
Terminals for input voltage of the power supply
Terminal screw M3.5x7
Terminal cover Protective cover of the terminal block
Module fixing screw
hole
Used to secure the module to the base unit.
M3x12 screw (user-prepared)
Module mounting
lever
This spring loaded lever simplifies disassembling of the module from the base
unit.
24 V DC terminal Used to supply 24 V DC/0.6 A power to inside the output module (Q62P only)
LIFE LED Indication of life detection function:
ON (green): When operation has started
ON (orange): Remaining life of the module approx. 50 %
Flash (orange):
On for 5 seconds and off for 1 second: Module remaining life is approx. 1 year.
At intervals of 0.5 seconds: Module remaining life is approx. 6 months
Flash (red): Function failure
ON (red): Ambient temperature out of range (Ambient temperature of the
module is exceeding the specification)
OFF:
– Module life expired. (Turns on red for 1 second after power-on)
– Ambient temperature is out of range (Ambient temperature of the module is
exceeding the specification and also the life detection function is stopped.)
LIFE OUT
terminal
Output signal of the terminal turns off (opens) when
module remaining life is 1 year or less
the watchdog timer error is detected in the module (in this case POWER LED
is on in orange).
The output signal of the terminal turns off and on at intervals of one second for
three times and then off (opens) when
the ambient temperature is detected out of range
the life diagnostics error (including detection error) is detected
The above operations are also available when the module Q61P-D is mounted
on an extension base unit. (In this case the POWER LED of the Q61P-D on the
extension base unit may turn on in dull red when the module is turned off. Note
that this does not indicate an error.)
Tab. 7-6: Description for part names of power supply modules