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Terminal AI3 / AI3: Analogue Input Capacity Control
• Be sure not input more than DC10 V in analogue input terminal.
• 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.
• Terminal AI4 / AI4 cannot be used.
SW501 Bit4
OFF
STEP response to analogue input
ON
LINEAR response to analogue input
40VAM--C8FATEE
(Terminal block without relay)
Shield wire MAX. 200 m
Al3
Input
0 - 10 V
AI3
Cooling Mode
Capacity control STEP
SW501
Bit4
ON
OFF
(Linear)
(Stepped)
ΔT = TA (°C) - Set temp. (°C)
10.00
10.00
(Max demand, Approx. ΔT = +2°C)
9.50
8.20
9.00
7.45
8.50
6.70
(Approx. ΔT = +1°C)
8.00
5.95
7.00
5.20
6.00
4.45
5.00
3.70
(Keep the current temperature, ΔT = 0°C)
4.00
2.95
3.00
2.20
2.00
1.45
(Min demand, Approx. ΔT = -1°C)
1.50
0.70
STEP 0 (No operation)
0.00
0.00
Terminal
Locally procured
0 - 10 V Signal (+)
GND (-)
(V)
STEP 11
(Stepped)
8.00
STEP 10
7.25
STEP 9
6.50
STEP 8
5.75
STEP 7
5.00
STEP 6
4.25
STEP 5
3.50
STEP 4
2.75
STEP 3
2.00
STEP 2
1.25
STEP 1
0.50
(Terminal block with relay)
SW501
Bit4
ON
OFF
(Linear)
(Stepped)
10.00
10.00
9.00
9.70
8.00
8.95
(Linear)
7.00
8.20
9.30
6.00
7.45
8.80
5.00
6.70
8.30
4.50
5.95
7.80
4.00
5.20
6.80
3.50
4.45
5.80
3.00
3.70
4.80
(Keep the current temperature, ΔT = 0°C)
2.50
2.95
3.80
2.00
2.20
2.80
1.50
1.45
1.80
1.00
0.70
1.30
0.00
0.00
– 33 –
40VAMR-C8FATEE
Same as on the left
Heating Mode
Capacity control STEP
ΔT = Set temp. (°C) - TA (°C)
STEP 13
(Max demand, Approx. ΔT = +2°C)
(Stepped)
STEP 12
STEP 11
STEP 10
STEP 9
STEP 8
(Approx. ΔT = -1°C)
STEP 7
STEP 6
STEP 5
STEP 4
STEP 3
STEP 2
STEP 1
(Min demand, Approx. ΔT = +1°C)
STEP 0 (No operation)
(V)
(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
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