PPI HumiTherm-c Pro Enhanced Temperature Humidity PID Controller User Manual

: June 11, 2024
: PPI

Table of Contents

FRONT PANEL LAYOUT ELECTRICAL CONNECTIONS
ELECTRICAL CONNECTIONS
WIRING CONNECTION
References
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PPI Hum iTherm-c Pro Enhanced Temperature Humidity PID Controller User Manual

UTILITY PARAMETERS : PAGE-33

Parameters	Settings (Default Value)
Compressor Control Strategy	Dry Bulb SP Dry Bulb PV (Default : Dry Bulb SP)

Input Type For Temperature
| Refer Table 1 (Default : RTD)
Signal Low For Temperature
|
Signal High For Temperature
|
DC Range Low For Temperature
| 199.9 to 999.9 (Default : 100.0)
DC Range High For Temperature| 25.0 to +25.0°C (Default : 0.0)
Input Type For %RH
| The above parameters are for %RH input and the descriptions are the same as their temperature counterparts.

Notes

RTD Pt100 input selection is not available for %RH.
The factory default input type is 0 -5 VDC with corresponding signal low, signal high, range low & range high default values.

Signal High For %RH

DC Range Low For %RH

DC Range High For %RH

Offset For %RH

TEMPERATURE PARAMETERS : PAGE-10

Parameters	Settings (Default Value)

Temperature Alarm Band
| 0.3 to 25.0°C (Default : 0.5 °C)
Temperature Alarm Hysteresis
| 0.2 to 10.0°C (Default : 0.2 °C)
Temperature Proportional Band
| 0.1 to 999.9°C (Default : 5.0 °C)
Temperature Integral Time
| 0 to 1000 Seconds (Default : 100)
Temperature Derivative Time
| 0 to 250 Seconds (Default : 25)
Temperature Cycle Time
| 0.5 to 25.0 Seconds (in steps of 0.5 secs.)

RELATIVE HUMIDITY (% RH) PARAMETERS : PAGE-11

Parameters	Settings (Default Value)

%RH Alarm Band
| 0.3 to 25.0% (Default : 2.0)
%RH Alarm Hysteresis
| 0.2 to 10.0% (Default : 2.0)
%RH Proportional Band
| 0.1 to 999.9% (Default : 10.0)
%RH Integral Time
| 0 to 1000 Seconds (Default : 100
%RH Derivative Time
| 0 to 250 Seconds (Default : 25)
%RH Cycle Time
| 0.5 to 25.0 Seconds (in steps of 0.5 secs.)

OP3 FUNCTION PARAMETERS : PAGE-13

Parameters	Settings (Default Value)

Compressor Output Type

Alarm Output Type

| Default : For Compressor O/P Type : SSR For Alarm O/P type : None)

Compressor Setpoint
| 0.0 to 50.0°C or 0.0 to 25.0°C
Compressor Hysteresis
| 0.1 to 25.0°C (Default : 0.2)
Compressor Time Delay
| 0.00 to 10.00 Min. Sec (in steps of 5 Seconds) (Default : 00.00)

SUPERVISORY PARAMETERS : PAGE-12

Parameters	Settings (Default Value)

SP Adjustment on PAGE-0
| (Default : Enable)

Self-Tune Command
| (Default : No)

Water Level-low Detection Logic
| (Default : Open)

Slave Id
| 1 to 127 (Default : 1)

Baud Rate
| 4800 9600 19200 (Default : 9600)

Parity
| None Even Odd (Default : Even)

COMPRESSOR OPERATION & POWER INDICATION : PAGE-1

Parameters	Settings (Default Value)

Compressor Operation Mode
| (Default : Auto)

Output Power for Temperature Loop
| 0 to 100.0% (View Only – Non editable)
Output Power for %RH Loop
| 0 to 100.0% (View Only – Non editable)

Table 1

Option	What it means	Range (Min. to Max.)
3-wire, RTD Pt100	-199.9 to 600.0°C / -199.9 to 999.9°F
0 to 20mA DC current	Refer Parameters Signal Low Signal High Range Low

FRONT PANEL LAYOUT ELECTRICAL CONNECTIONS

Front Panel

Keys Operation

Symbol	Key	Function
PAGE	Press to enter or exit set-up mode.
DOWN	Press to decrease the parameter value. Pressing once decreases

the value by one count; keeping pressed speeds up the change.
| UP| Press to increase the parameter value. Pressing once increases the value by one count; keeping pressed speeds up the change.
| ENTER| Press to store the set parameter value and to scroll to the next parameter on the PAGE.

PV Error Indications

Message	PV Error Type
****	Over-range(Dry-Bulb Temp. above Max. Range)
****	Under-range(Dry-Bulb Temp. below Min. Range)
****	Open(Sensor open / broken)

ELECTRICAL CONNECTIONS

WIRING CONNECTION

RH SENSORS

R= Red
G= Green
B= Black

(Humirel RH sensor)
(IST RH sensor)
(Capacitance RH sensor)

Enhanced ‘Temperature + Humidity’ PID Controller

This brief manual is primarily meant for quick reference to wiring connections and parameter searching. For more details on operation and application; please log on to www.ppiindia.net