Carel heaterSteam - Humidity Probe Control Configurations; Single and Dual Humidity Probe Control

22
ENG
“heaterSteam” +0300080EN - rel. 1.0 - 27.04.2016
Screen ind. Screen desc. Parameter
Ea01 Control type prop. to external signal with limit probe
Ea03 Proportional band Set:
Hysteresis (0-100%)
Minimum production (0-100%)
Maximum production (0-100%)
Ea06 Limit probe Set:
Set point (0-100 %rH)
Diff erential (0-100%)
Ec01 Main probe type Select from: 0-1V, 0-10V, 2-10V, 0-20mA,
4-20mA
Ec02 Limit probe type Select from: 0-1V, 0-10V, 2-10V, 0-20mA,
4-20mA
OUT
REF
M2M9 M8
1 12345678212
OUT H / T
M
+ (G)
Fig. 4.s
Note: in industrial environments (IEC EN61000-6-2) the signal cables
leaving the unit must not exceed 30 m (98’) in length: steam production
signal cable (terminals M2.1, M2.2), digital remote on/off input (terminals
M2.7, M2.8) and shielded cable for RS485 communication.
4.6 Control with humidity probes
The main control board, connected to a room humidity probe, manages
steam production based on the humidity measured. A second outlet
humidity limit probe can also be connected: with this confi guration,
typical of air handling units, the main control board continues managing
steam production according to the humidity requirement, however
production is limited according to the relative humidity measured in the
outlet duct.
HP HLP
Remote
Contact
Fig. 4.t
Key:
HP Humidity control probe (intake/room humidity probe)
HLP Limit humidity probe (outlet humidity probe)
Remote Contact Remote contact
CONTROL WITH ONE HUMIDITY PROBE
• short-circuit terminals M2.7 – M2.8 (jumper) to enable production;
alternatively connect terminals M2.7 – M2.8 to a remote contact (e.g.:
switch, timer,...);
• connect the main active room probe to terminals M2.1, M2.2 (GND)
and M2.3 (+12Vdc);
• to enable control, set:
Screen ind. Screen desc. Parameter
Ea01 Control type one humidity probe
Ea05 Modulating control Set:
humidity set point (0-100 %rH)
diff erential (2-20%rh)
Minimum production (0-100%)
Maximum production (0-100%)
Ec01 Main probe type Select from: 0-1V, 0-10V, 2-10V,
0-20mA, 4-20mA
M2M9 M8
1 12345678212
OUT H / T
M
+ (G)
Main probe
Fig. 4.u
_________________________________________________________
CONTROL WITH ONE HUMIDITY PROBE AND LIMIT PROBE
• short-circuit terminals M2.7 – M2.8 (jumper) to enable production;
alternatively connect terminals M2.7 – M2.8 to a remote contact (e.g.:
switch, timer,...);
• connect the main active room probe to terminals M2.1, M2.2 (GND)
and M2.3 (+12Vdc);
• connect the active limit probe to terminals M2.5, M2.3 (+12Vdc), M2.6
(GND);
• to enable control, set:
Screen ind. Screen desc. Parameter
Ea01 Control type humidity with limit probe
Ea05 Modulating
control
Set:
humidity set point (0-100 %rH)
diff erential (2-20%rh)
Minimum production (0-100%)
Maximum production (0-100%)
Ea06 Limit probe Set point (0-100 %rH)
Diff erential (0-100%)
Ec01 Main probe type Select from: 0-1V, 0-10V, 2-10V, 0-20mA, 4-20mA
Ec02 Limit probe type Select from: 0-1V, 0-10V, 2-10V, 0-20mA, 4-20mA
M2M9 M8
1 12345678212
OUT H / T
M
+ (G)
Main probe
OUT H / T
M
+ (G)
Second probe
Fig. 4.v
The following probes can be connected:
CAREL probes for rooms DPWC111000
for air ducts DPDC110000, DPDC210000
for technical applications DPPC210000, DPPC210000
Note: non-CAREL active probes can be connected to the controller.