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Shield wire MAX. 200m
Input
Name
AI3
Analogue Input Capacity Control
Analog Input 1 (DC 0 - 10 V)
SW501 bit-4(MCC-1777) OFF STEPPED response to analogue input
SW501 bit-4(MCC-1777) ON LINEAR response to analogue input
・To ease the integration of the Dx-coil with the DDC the capacity control is able to operate with a
STEPPED or LINEAR function from the analogue input.
・To select either a STEPPED(default) or LINEAR response, from the analogue input, use
SW501 bit4 located on the DDC(0-10V) interface P.C. board(MCC-1777)
AI4
Nothing
Analog Input 2 (DC 0 - 10 V)
・ Capacity control signal(analogue input voltage) will be used as the main control value for the compressor frequency.
・ The control of capacity may not be able to be performed according to the state of an air-conditioner
(During oil recovercontrol, defrost etc.).
１）Capacity control 0-10V（Overview of capacity control）*
*There are possibilities of thermodynamic and/or mechanical limitation from many factors. which may affect our system's heat pump cycle
(refrigerant cycle) during operation. Hence, there is a possibility that the capacity output may be different from capacity control setting.
Cooling Mode
Capacity Control STEP
SW501 bit4
ON
OFF
(Linear) (Stepped)
10.00
10.00
STEP 11 (100%)
9.50
8.20
(Max demand, Approx. ΔT=+2 ℃ )
STEP 10 (95%)
9.00
7.45
8.50
6.70
STEP 9 (90%)
STEP 8 (85%)
(Approx. ΔT=+1 ℃ )
8.00
5.95
STEP 7 (80%)
7.00
5.20
STEP 6 (70%)
6.00
4.45
STEP 5 (60%)
5.00
3.70
STEP 4 (50%)
4.00
2.95
(Keep the curent tenperature, ΔT=0 ℃ )
3.00
2.20
STEP 3 (40%)
2.00
1.45
STEP 2 (30%)
STEP 1 (20%)
1.50
0.70
(Min demand, Approx. ΔT=-1 ℃ )
STEP 0(No operation)
0.00
0.00
0-10V Analogue input capacity control
SW501 Bit4 OFF(stepped)
10.00
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0 1 2 3 4 5 6 7 8 9 101112
STEP
Analogue Input to Capacity control.
Cannot be used.
(V)
(Stepped) (Linear)
8.00 9.30
7.25 8.80
6.50 8.30
5.75 7.80
5.00 6.80
4.25 5.80
3.50 4.80
2.75 3.80
2.00 2.80
1.25 1.80
0.50 1.30
SW501 Bit4 ON(Liner)
10.00
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
12
11
10
9
8
7
6
5
4
3
2
1
0
STEP
Description
SW501 bit4
ON
OFF
Heating Mode
(Linear) (Stepped)
Capacity Control STEP
10.00
10.00
STEP 13 (100%)
(Max demand, Approx. ΔT=-2 ℃ )
9.00
9.70
8.00
8.95
STEP 12 (90%)
7.00
8.20
STEP 11 (80%)
STEP 10 (70%)
6.00
7.45
5.00
6.70
STEP 9 (60%)
STEP 8 (50%)
(Approx. ΔT=-1 ℃ )
4.50
5.95
STEP 7 (45%)
4.00
5.20
STEP 6 (40%)
3.50
4.45
STEP 5 (35%)
3.00
3.70
STEP 4 (30%)
2.50
2.95
(Keep the curent tenperature, ΔT=0 ℃ )
2.00
2.20
STEP 3 (25%)
1.50
1.45
STEP 2 (20%)
STEP 1 (15%)
1.00
0.70
(Min demand, Approx. ΔT=+1 ℃ )
STEP 0(No operation)
0.00
0.00
0-10V Analogue input capacity control
SW501 Bit4 OFF(stepped)
10.00
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0 1 2 3 4 5 6 7 8 9 1011121314
STEP
P10
✓ :Available × : Prohibition
TA
DDC
×
✓
‐
‐
(V)
(Stepped) (Linear)
9.50
8.80
8.75
7.80
8.00
6.80
7.25
5.80
6.50
4.80
5.75
4.30
5.00
3.80
4.25
3.30
3.50
2.80
2.75
2.30
2.00
1.80
1.25
1.30
0.50
0.80
SW501 Bit4 ON(Liner)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
STEP
TF
×
‐
10.00
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
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