Mitsubishi QJ71BR11

App - 30 App - 30
MELSEC-Q
APPENDIX
(4) Redundant power supply module information
Number Name Meaning Explanation
Set by
(When Set)
Corresponding
ACPU
M9
Applicable
CPU
SM
1780
Power supply off
detection flag
OFF: No redundant power
supply module with
input power OFF
detected
ON : Redundant power
supply module with
input power OFF
detected
• Turns ON when one or more redundant power supply
modules with input power OFF are detected.
• Turns on if any of SD1780 bits is on.
• Turns off if all bits of SD1780 are off.
• Turns OFF when the main base unit is not the redundant
main base unit (Q3
RB).
S
(Each END)
SM
1781
Power supply
failure detection
flag
OFF: No faulty redundant
power supply module
detected
ON : Faulty redundant power
supply module
detected
• Turns ON when one or more faulty redundant power
supply modules are detected.
• Turns on if any of SD1781 bits is on.
• Turns off if all bits of SD1781 are off.
• Turns OFF when the main base unit is not the redundant
main base unit (Q3
RB).
S
(Each END)
SM
1782
Momentary
power failure
detection flag for
power supply 1
*1
SM
1783
Momentary
power failure
detection flag for
power supply 2
*1
OFF: No momentary power
failure detected
ON : Momentary power
failure detected
• Turns ON when a momentary power failure of the input
power supply to the power supply 1 or 2 is detected one
or more times. After turning ON, remains ON ever if the
power supply recovers from the momentary power
failure.
• Turns OFF the flag (SM1782, SM1783) of the power
supply 1/2 when the CPU module starts.
• When the input power to one of the redundant power
supply modules turns OFF the corresponding flag turns
OFF.
• This relay turns OFF when the main base unit is not the
redundant main base unit (Q3
RB).
S
(Each END)
New
QnPRH
Remote
*1: The "power supply 1" indicates the redundant power supply module (Q6 RP) mounted on the POWER 1 slot of the redundant base unit (Q3 RB/Q6 RB).
The "power supply 2" indicates the redundant power supply module (Q6
RP) mounted on the POWER 2 slot of the redundant base unit (Q3 RB/Q6 RB).