16
ENG
“optiMist” +0300065EN - rel. 1.6 - 18/06/2021
ON/OFF and limit flow signal (control CF)
For evaporative cooling / indirect humidifcation (IEC)
J2
J6
B6 B7 B8 GND
IEC
G0
1
+VDC
1
REF
OUT
Fig. 3.k
Key:
1.
IEC fan / damper modulating signal
3.6 Modulating control signal
The control signal input connections depend on the activated control
algorithm.
Cables
up to 30 m: two-wire cables cross-section 0.5 mm
2
(AWG20)
To control the section for direct humidification (DEC: Direct Evaporative
Cooling), the signal can come from:
•
modulating control with external controller
•
modulating control with limit probe (temperature or humidity)
•
modulating control with humidity probe
•
modulating control with humidity probe and limit probe
(temperature or humidity
To control the section for indirect humidification (IEC: Indirect Evaporative
Cooling), on the other hand, the signal can come from:
•
modulating control with external signal
•
modulating control with limit signal (temperature or humidity
probe or air flow-rate/flow limit signal)
•
modulating control with temperature probe
•
modulating control with temperature probe with limit signal
(temperature or humidity probe or air flow-rate/flow limit
signal)
Tab. 3.c
To set the type of operation, control and signal: “installer menu > control
type
(see chap. 9.11 Installer Menu).”
Note: The use of shielded cables is recommended. The cables must
not be lodged near power cables at 230 V or near remote control
switch wiring: this way, the risk of measurement error risks from
electromagnetic interference can be avoided.
Modulating control with external controller (contr. P)
For humidification / direct evaporative cooling (DEC):
0...1 V; 0...10 V; 2...10 V; 0...20 mA; 4...20 mA.
J9
J10
J12
J11
J13
J14
J15
SERIAL CARD
J9
J24
J2
J3
J4
J5
J16
J6
J21
J19
FIELD CARD
pCO3
1
B
B
B
B B B
B
Fig. 3.l
Key:
1.
external controller
Connections:
Cabinet optiMist
External controller
J2
B1
OUT
GND
Reference, Shield
Per raffrescamento evaporativo (IEC)
Collegamenti:
Cabinet optiMist
External controller
J6
B6
OUT
GND
Reference, Shield
Modulating control with control probe
For humidification / direct evaporative cooling (DEC) and ambient
humidity control (H control):
0...1 V; 0...10 V; 2...10 V; 0...20 mA; 4...20 mA
J9
J10
J12
J11
J13
J14
J15
SERIAL CARD
J9
J24
J2
J3
J4
J5
J16
J17
J18
J6
J7
J21
J22
J20
J19
FIELD CARD
pCO3
1
B B B
B B B B
out H
M
+(G)
Fig. 3.m
Key:
1.
humidity probe
Connections:
Cabinet optiMist
Ambient humidity probe
J2
B1
OUT H
+Vdc
+(G)
GND
Reference, shield
For evaporative cooling (IEC), temperature control (T control):
J2
J6
U6 U7 U8 GND
2
+VDC
+(G)
M
out T
Fig. 3.n
Key:
2.
temperature probe
Connections:
Cabinet optiMist
Temperature probe
J6
B6
OUT T
J2
+Vdc
+(G)
J6
GND
Reference, shield
