PPI HumiTherm-c RTD Pt100 Operation Manual

Composite 'Temperature + Humidity' Controller
Version : RTD Pt100, 3-wire for Temperature
DC Linear (Voltage) for Humidity
UTILITY PARAMETERS : PAGE-33
Settings
Parameters
(Default Value)
Compressor Dry Bulb
Control Strategy SP
Dry Bulb
PV
(Default : Dry Bulb SP)
Zero Offset for
Temperature Value
-25.0 to +25.0°C
(Default : 0.0)
Zero Offset for
RH Value -25.0 to +25.0%
(Default : 0.0)
Range Low -199.9 to 999.9
(Refer Table 1)
(Default : 0.0)
Range High -199.9 to 999.9
(Refer Table 1)
(Default : 151.5)
TEMPERATURE PARAMETERS : PAGE-10
Settings
Parameters
(Default Value)
Alarm-1 Band
0.3 to 25.0°C
(Default : 0.5)
Alarm-1 Hysteresis
0.2 to 10.0°C
(Default : 0.2)
Proportional Band
0.1 to 999.9°C
(Default : 5.0)
Integral Time
0 to 1000 Seconds
(Default : 100)
Derivative Time
0 to 250 Seconds
(Default : 25)
Cycle Time 0.5 to 25.0 Seconds
(in steps of 0.5 secs.)
(Default : 1.0)
RELATIVE HUMIDITY (% RH) PARAMETERS : PAGE-11
Settings
Parameters
(Default Value)
Alarm-2 Band
0.3 to 25.0%
(Default : 2.0)
Alarm-2 Hysteresis
0.2 to 10.0%
(Default : 2.0)
Operation Manual
This brief manual is primarily meant for quick reference to wiring connections
and parameter searching. For more details on operation and application;
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Settings
Parameters
(Default Value)
Proportional Band
0.1 to 999.9%
(Default : 10.0)
Integral Time
0 to 1000 Seconds
(Default : 100)
Derivative Time
0 to 250 Seconds
(Default : 25)
COMPRESSOR OPERATION & POWER INDICATION : PAGE-1
Cycle Time 0.5 to 25.0 Seconds
(in steps of 0.5 secs.)
(Default : 1.0)
OP3 FUNCTION PARAMETERS : PAGE-13
Settings
Parameters
(Default Value)
Output-3 Function
Alarm
Selection
Compressor
(Default : Alarm)
Compressor
0.0 to 50.0°C or
Setpoint
0.0 to 25.0°C
(Default : 45.0 or 0.2)
Compressor
Hysteresis 0.1 to 25.0°C
(Default : 0.2)
Compressor Time
0.00 to 10.00 Min. Sec
Delay
(in steps of 5 Seconds)
(Default : 00.00)
SUPERVISORY PARAMETERS : PAGE-12
Settings
Parameters
(Default Value)
SP Adjustment on
Enable
PAGE-0
Disable
(Default : Enable)
Self-Tune
No
Command
Yes
(Default : No)
Baud Rate
(Default : 4800)
Settings
Parameters
(Default Value)
The controller is calibrated for 0 to 5 VDC input for % RH. The transmitter output signal,
ID for Temperature
1 to 8 however, may be any voltage between 0 to 5 VDC (For e.g. 0 to 1 VDC,1 to 3.6 VDC, 0 to
Loop
3.3 VDC etc.). The value for 'Range Low' and 'Range High' parameters must be
(Default : 1)
corresponding to 0 and 5 VDC only. For this, use the following formulae for computing the
'Range Low' and 'Range High' values.
ID for %RH Loop
1 to 8
(Default : 2)
Range Low =
Settings
Parameters
(Default Value)
(where; Span = Signal High - Signal Low)
Compressor
Automatic
Operation Mode
Off
Example 1
On
Signal Low = 0 VDC, signal High = 1.0 Vdc
(Default : Auto)
Output Power for
Temperature Loop
0 to 100.0%
Range Low =
(View Only - Non editable)
Output Power for
%RH Loop Range High =
0 to 100.0%
(View Only - Non editable)
Example 2
Signal Low = 0 VDC, signal High = 3.3 VDC
Here, Span = 3.3 -0 = 3.3 VDC
Range Low =
Range High =
TABLE-1 RH INPUT CONFIGURATION
100 100.0
X (0 - Signal Low) Range High =
Span
Example 3
Signal Low = 1.0 VDC, signal High = 3.6
VDC
Here, Span = 3.6 - 1.0 = 2.6 VDC
100.0
X (0 - 0) = 0.0
1.0
100.0
100.0 Range Low =
X (5 - 0) = 500.0
1.0
100.0
Range High =
100.0
X (0 - 0) = 0.0
3.3
100.0
X (5 - 0) = 151.5
3.3
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X (5 - Signal Low)
Span
X (0 - 1.0) = -38.5
2.6
X (5 - 1.0) = 153.8
2.6