Switching output
AH - 30
G
Mounting and Installation
W1
A1 B1
W1
A1 B1
Hysteresis
3% r.H.
Switching output 1
Relative humidity
Gone below
preset
switchpoint
threshold
Preset
switchpoint
threshold
exeeded
Switching back when humidity
falls below preset limit value
with 3% r.H. hysteresis
Behaviour when preset
limit value is exeeded
W2
A2 B2
W2
A2 B2
Hysteresis
3% r.H.
Switching output 2
Relative humidity
Gone below
preset
switchpoint
threshold
Preset
switchpoint
threshold
exeeded
Behaviour when preset
limit value is exeeded
Switching back when humidity
falls below preset limit value
with 3% r.H. hysteresis
Connecting diagram
AH - 30
1
2
3
4
5
6
7
8
9
GND
UB 24V AC/DC
Humidifying
Relay 1
Dehumidifying
Humidifying
Relay 2
Dehumidifying
Potential-free
changeover contact 24V
Output humidity 0-10V
Supply
AC
DC
→ 1
24 V∼
15 ... 36 V DC
→ 3
0 V
GND
Output
AC
DC
2
→ (r. F.)
0 ... 10 V
0 ... 10 V
4
(A1) →
Relay 1 Breaker contact
5
(W1) →
Relay 1 Changeover contact
6
(B1) →
Relay 1 Normally open contact
7
(A2) →
Relay 2 Breaker contact
8
(W2) →
Relay 2 Changeover contact
9
(B2) →
Relay 2 Normally open contact
Schematic diagram
AH - 30
Mode 1: Switch points for both relay outputs can be defined independent from each other in the range of 5 %... 95 % r. H. by turning control knobs
(R 1 for relay 1, R 2 for relay 2, see schematic diagram). When the respective switch point is exceeded, the corresponding relay switches over
(changeover contact W switches from position A to position B). When the preset switchpoint is undershot again by more than 3 % r. H. (hystere-
sis), the respective switching output switches back to the initial position (changeover contact W switches from position B to position A).
Mode 2: Only control knob R1 is active (R 2 without function)! The switchpoint for the first relay is defined in the range of 5 %... 95 % r. H. by
turning control knob R 1 (see schematic diagram). The switch point for the second relay output is in mode 2 invariably defined as "switch point
1 + 5 % r. H." A hysteresis of 3 % r. H. is predefined for each switching output also in mode 2.
1
A1 W1 B1 A2 W2 B2
2 3
7 8 9
4 5 6
R1
J1
95%
5%
95%
5%
R2
+ UB
Output
GND
Mode 1 Mode 2
Switching output
Switching
threshold
relative
humidity for
relay 1
Switching
threshold
relative
humidity for
relay 2
Operating
mode
