Stulz Split-Air CST 50 - Page 34

E/0204/39/34
Fan Management (Input / Output)
Condenser Fan Speed Control - Internal Phase Cut
Condenser Fan Speed Control - External Phase Cut
Evaporator Fans
Note: to use the external phase cut device, be sure to have connected X8 Pin1 to L(Line) and X8 Pin3 to N
(Neutral).
one 2x2 minifit connector
one 2x2 minifit connector
one 2x2 minifit connector
Terminals
X8 pin 1
X8 pin 2
X8 pin 3
X8 pin 4
Description
L
Fan L
N
Fan N
Silk screen
AC FAN
Rate
4A
4A
4A
4A
Terminal number
1 of 2x2
1 of 2x2
1 of 2x2
1 of 2x2
Terminals
X26 pin 1
X26 pin 2
X26 pin 3
X26 pin 4
Description
Positive, current output +
not connected
Negative, current input -
not connected
Silk screen
AC FAN
Rate
4A
-
4A
-
Terminal number
1 of 2x2
1 of 2x2
1 of 2x2
1 of 2x2
Logic ID
1 V+
1 V-
1 OUT
1 IN
Description
Evaporator fan 1 - V+ supply; 5A flow
Evaporator fan 1 - V- supply; 5A flow
Evaporator fan 1 - PWM signal (450 Hz)
Evaporator fan 1 - Tachometric signal (max
frequency 160 Hz)
Terminals
X17 pin 1
X17 pin 2
X17 pin 3
X17 pin 4
Terminal number
1
1
1
1
Logic ID
2 V+
2 V-
2 OUT
2 IN
Description
Evaporator fan 2 - V+ supply; 5A flow
Evaporator fan 2 - V- supply; 5A flow
Evaporator fan 2 - PWM signal (450 Hz)
Evaporator fan 2 - Tachometric signal (max
frequency 160 Hz)
Terminals
X18 pin 1
X18 pin 2
X18 pin 3
X18 pin 4
Terminal number
1
1
1
1
Logic ID
3 V+
3 V-
3 OUT
3 IN
Description
Evaporator fan 3 - V+ supply; 5A flow
Evaporator fan 3 - V- supply; 5A flow
Evaporator fan 3 - PWM signal (450 Hz)
Evaporator fan 3 - Tachometric signal (max
frequency 160 Hz)
Terminals
X19 pin 1
X19 pin 2
X19 pin 3
X19 pin 4
Terminal number
1
1
1
1