Modulating Control Signal (J2) - Carel humiFog multizone User Manual

ENG

3.4 Modulating control signal (J2)

The control signal input connections depend on the control algorithm
activated.
Cables • up to 30 m: two-wire cables cross-section 0.5 mm
(AWG20)
the signal may • modulating control with external controller
come from • modulating control with ambient humidity probe
• external controller and limit humidity probe
• ambient humidity probe and limit humidity probe
• modulating control with temperature control
• modulating control with temperature control and limit
probe
To set the type of operation, control and signal: "installer menu > type of
control (see chap. 9.11 Installer menù). "
N.B.: shielded cables should be used. The cables must not run near
the 230 V/208 V power cables nor near the contactor cables: this avoids
measurement errors due to electromagnetic disturbance.
a. Modulating control with external controller (P control)
0 to 1 V; 0 to 10 V; 2 to 10 V; 0 to 20 mA; 4 to 20 mA.
J9 J24
Key:
1.
external controller
Connections:
humiFog cabinet
J2 B1
GND
b. Modulating control with ambient humidity probe (H control)
0 to 1 V; 0 to 10 V; 2 to 10 V; 0 to 20 mA; 4 to 20 mA
J9 J24
Key:
1.
humidity sensor
Connections:
humiFog cabinet
J2 B1
+Vdc
GND
"humiFog multizone - pumping unit"
2
FIELD CARD SERIAL CARD
J2 J4
J3
1
Fig. 3.g
External controller
OUT
Reference, shield
FIELD CARD SERIAL CARD
J2 J4
J3
1
Fig. 3.h
Ambient humidity probe
OUT H
+(G)
M
+0300066EN - rel. 1.2 - 10.12.2015
c. Modulating control
(PH/PT control)
0 to 1 V; 0 to 10 V; 2 to 10 V; 0 to 20 mA; 4 to 20 mA
J24
J9
Key:
1.
limit humidity/temperature probe;
2.
external controller.
Connections:
p
humiFog cabinet
J2 B1
B2
+Vdc
GND
J5
d. Modulating control with ambient humidity probe and limit humidity
and temperature probe (HH/HT control)
0 to 1 V; 0 to 10 V; 2 to 10 V; 0 to 20 mA; 4 to 20 mA
J24
J9
Key:
1.
limit humidity/temperature probe;
2.
ambient humidity probe.
Connections:
humiFog cabinet
J2 B1
B2
+Vdc
GND
e. Modulating control with temperature control (T control)
0 to 1 V; 0 to 10 V; 2 to 10 V; 0 to 20 mA; 4 to 20 mA
J9 J24
Key:
1.
ambient temperature probe;
16
with controller and
FIELD CARD SERIAL CARD
J2
J3
/T
Fig. 3.i
External controller Limit humidity
probe
OUT
OUT H/T
+(G)
Reference M
FIELD CARD SERIAL CARD
J2 J4
J3
1
/T
2
Fig. 3.j
External controller limit humidity probe
OUT H
OUT H/T
+(G) +(G)
M M
FIELD CARD SERIAL CARD
J2 J3 J4
Fig. 3.k
limit probe
p
J4 J
1
2
p
J5
p
J5
1