Operating Rate Output - Toshiba MMY-MAP0804HT8-E Service Manual

6-8-9. Operating Rate Output

Operation
At the output terminals, a signal is present (relay closed) or absent (relay open) in various combinations according
to the system operation factor, as shown in the diagram.
The operation rate (FA) is the percentage ratio of the current output of the system to the maximum output (100%).
Function
System operation
rate output
off = Relay open
on = Relay closed
C2
CN514
MONITOR
OUTPUT1
OUTPUT2
OUTPUT3
PJ20
TB1
* Connect the optional P.C. board to the header outdoor unit.
Note 1: Output Relay (K1, K2, K3) Contact Specifications
• Output terminals (OUTPUT1, 2, 3) must satisfy the following electrical rating.
• When connecting a conductive load (e.g. relay coil) to loads K1, K2 and K3, insert a surge killer CR (for an AC
power supply) or a diode for preventing back electromotive force (for a DC power supply) on the bypass circuit.
<Electrical Rating>
220-240 VAC, 10 mA or more, 1A or less
24 VAC, 10 mA or more, 1 A or less (non-conductive load)
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Header outdoor unit
Outdoor unit
interface PCB
C2
SW16
CN514
ON
OFF
1 2 3 4
SW16 OUTPUT1
off
ON
OFF
on
1 2 3 4
Bit 1: ON
off
Bit 2: OFF
on
off
on
off
on
Connection cable 2
Interface-side connector (green)
Monitoring device
Output terminal for each function
Output terminal for each function
Output terminal for each function
Connector on optional PCB side
Terminal block
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Locally procured
(See "NOTE")
Optional PCB
TB1
1
K1
OUTPUT1
2
3
PJ20 K2
OUTPUT2
4
5
K3
OUTPUT3
6
Shield
wire
OUTPUT2 OUTPUT3
off off
off off
on off
on off
off on
off on
on on
on on
117
MONITOR
Operation factor (FA)
FA=0%
< <
0% FA 20%
<
20% FA 35%
35% FA < 50%
50% FA < 65%
<
65% FA 80%
<
80% FA 95%
95% FA