The position of J01 (MCC-1777)
Terminal AI1 / AI1: 4 - 20 mA FAN interlocking control by external input
• FAN mode is switched by external 4 - 20 mA input.
• Both FAN control with 4 - 20 mA input and FAN mode change with remote controller are valid, but boost priority is
given.
• The FAN priority control is switched by the DN setting of [4A0].
0000: Default (no change in FAN mode by 4 - 20 mA input)
0001: FAN control by 4 - 20 mA input, but priority is given to FAN control from the outdoor unit
0002: FAN control 4 - 20 mA input with priority
• The FAN mode switching threshold value for 4 - 20 mA input can be changed in the DN setting (See the table as
below).
* Terminal AI2 / AI2 cannot be used.
* The change in FAN speed with 4 - 20 mA input is also reflected in the 0 - 10 V output of AO1 / AO1.
J01 Action
Connect
Pulse input
(At factory setting)
Pulse width 200 to 300 ms
Pulse interval 200 to 300 ms or more.
Cut
Static input
ON OFF
18
14
7
17
13
6
mA
[DN]
[4A2] 0004 (4 mA) [4A1] +4 mA Applicable range +1 to +11 *¹
[4A1] 0013 (13 mA) Applicable range 7 mA to 16 mA
[4A3] 0007 (7 mA) [4A1] -7 mA Applicable range -1 to -12 *²
HH
H
L
*1: Upper limit. DN [4A1] + DN [4A2] ≤ 18 mA
*
2: Lower limit. DN [4A1] - DN [4A3] ≥ 4mA
Default
Details
TCB-IFDMR01UP-UL
(Terminal block with relay)
MAX. 328'1" (100 m)
Locally procured
(Input
4 - 20 mA)
4 - 20 mA Signal (+)
AI1
AI1
GND (-)
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