35
WT07137X02
(3) Level signal and pulse signal
(A) Level signal
How the demand level is determined
Demand level signal specification: When higher levels’ contacts turn on, lower levels’ contacts also stay on.
Demand level signal specification: Only the current levels’ contacts turn on.
*1 The specification must be followed in the 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.
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.
3. Demand control is performed when the demand level contact turns on. If two different demand levels' contacts turn on at the
same time, the demand control will be performed with the higher level demand.
(Even if the demand control is not performed due to unexpected problems, Mitsubishi Electric will not be responsible for
exceeding the maximum power demand.)
(4) Pulse signal
1. If the input pulse signal is the same as the current operation status of the air conditioning units, no status change will occur. (For
example, if an ON signal is input while the air conditioning units are in operation, the units will continue their operation.)
2. If the operation from the local remote controller is prohibited, ON/OFF status, operation mode, or temperature setting cannot
be changed and filter sign cannot be reset from the local remote controller.
3. The pulse width (contact ON) should be between 0.5 and 1.0 second.
Stop
Run
Stop
Contact ON
Contact OFF
Normal
Emergency
stop
Normal
Contact ON
Contact OFF
No.8
OFF
No.7
ON
OFF
No.6
ON
OFF
No.5
ON
OFF
CN5
Contact
ON
Level 0
Level 1
Level 2
Level 3
Level 4
No.8
OFF
No.7
ON
OFF
No.6
ON
OFF
No.5
ON
OFF
CN5
Contact
ON
Level 0
Level 1
Level 2
Level 3
Level 4
*1
0.5–1.0 second
Permit
0.5–1.0 second
Prohibit
Permit
Contact ON
Contact OFF
Contact ON
Contact OFF
(Example) Prohibit/Permit
(Prohibit)
(Permit)
0.5–1.0 second
Stop
0.5–1.0 second
Run
Stop
(Example) ON/OFF
Contact ON
Contact OFF
Contact ON
Contact OFF
(ON)
(OFF)
