Mitsubishi Electric EW-50A Installation And Instruction Manual page 41

(2) External signal input specifications
Lead wire from
CN5
PAC-YG10HA-E
No. 9 Red
No. 8 Gray
No. 7 Blue
No. 6 Yellow
No. 5 Orange
(3) Level signal and pulse signal
(A) Level signal
Contact ON
Contact OFF
Normal
How the demand level is determined
Demand level signal specification: When higher levels' contacts turn on, lower levels' contacts also stay on.
CN5 Contact
No.8
No.7
No.6
No.5
Demand level signal specification: Only the current levels' contacts turn on.
CN5 Contact
No.8
No.7
No.6
No.5
1. If [Emergency stop (Level signal)] is selected, the air conditioning units in normal operation will stop when the contact turns
on. Even when the contact turns off, these units will remain stopped. They must be started up manually after the emergency
stop is reset.
2. If [ON/OFF (Level signal)] is selected, the air conditioning units that are stopped will start operation when the contact turns on.
Conversely, the units that are in operation will stop when the contact turns off.
Note
● Even if the Peak Cut control is not performed due to unexpected problems, Mitsubishi Electric will not be responsible for
exceeding the maximum power demand.
WT07417X01
Demand
(Level signal)
External power supply (+12 or +24 VDC)
Demand level 4 Demand level 4
Demand level 3 Demand level 3
Demand level 2 Demand level 2
Emergency stop signal,
Demand level 1
Normal operation signal
Emergency
stop
Normal
ON
OFF *1
ON
OFF *1
ON
*1
OFF
ON
*1
OFF
Level 4
Level 3
Level 2
Level 1
Level 0
ON
OFF
ON
*2
OFF
ON
*2
OFF
ON
*2
OFF
Level 4
Level 3
Level 2
Level 1
Level 0
Emergency Stop
(Level signal)
ON signal,
OFF signal
Contact ON
Contact OFF
Stop
*1 Peak Cut control is performed when the demand
*2 The specification must be followed in the
41
ON/OFF ON/OFF/Prohibit/Permit
(Level signal) (Pulse signal)
– Permit signal
– Prohibit signal
– OFF signal
ON signal
Run Stop
level contact turns on. If two different demand
levels' contacts turn on at the same time, the
Peak Cut control will be performed with the
higher level demand.
following order: ① When the level changes, the
contact of the level after the change turns on.;
② The contact of the level before the change
turns off.