S+S Regeltechnik HYGRASREG RH-30 Notice D'instruction page 7

G
Mounting and Installation
Switching output
Switching output 1
Gone
below preset
switchpoint
threshold
W1
A1 B1
Switching back when humidity
falls below preset limit value
with 3% r.H. hysteresis
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.
(hysteresis), 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.
Connecting diagram
1 UB 24V AC/DC
Output humidity 0-10V
2
3 GND
Humidifying
4
Relay 1
5
Dehumidifying
6
Humidifying
7
8 Relay 2
9 Dehumidifying
Potential-free
changeover contact 24V
Supply
→ 1
→ 3
Output
2 → (r. F.) 0 ... 10 V
4
(A1) → Relay 1
5 (W1) → Relay 1
6 (B1) → Relay 1
7 (A2) → Relay 2
8
(W2) → Relay 2
9 (B2) → Relay 2
W1
A1 B1
Preset
switchpoint
threshold
Hysteresis
exeeded
3% r.H.
Relative humidity
Behaviour when preset
limit value is exeeded
RH - 30
AC DC
24 V∼ 15 ... 36 V DC
0 V GND
AC DC
0 ... 10 V
Breaker contact
Changeover contact
Normally open contact
Breaker contact
Changeover contact
Normally open contact
Switching output 2
Gone
below preset
switchpoint
threshold
W2
Hysteresis
A2 B2
Switching back when humidity
falls below preset limit value
with 3% r.H. hysteresis
Schematic diagram
R2 extended to the outside
(adjustment wheel)
R2
Switching thresholds
relative humidity for
5% 95%
relay 1 and relay 2
1 2 3 4 5 6 7 8 9
W2
A2 B2
Preset
switchpoint
threshold
exeeded
3% r.H.
Relative humidity
Behaviour when preset
limit value is exeeded
Mode 1
Mode 2
J1
Mode
5% 95%
RH - 30
RH - 30
R1