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1049

WRT-424

PI Controller
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1049
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Product description
Features:
1. For 2-pipe FCU, to control 0-10VDC & 4-20mA modulating valve, Fan on/off.
2. For 2-pipe FCU, to control float-point valve, Fan on/off.
3. For 2-pipe FCU, to control 0-10VDC & 4-20mA modulating valve, and  220VAC three-speed Fan (High-Mid-low).
4. For 4-pipe FCU, to control 0-10VDC & 4-20mA modulating valve, and  220VAC three-speed Fan (High-Mid-low).
5. For 4-pipe FCU, to control 0-10VDC & 4-20mA modulating valve, Fan on/off. 
6. Fan speed stage and valve open angle both can be displayed in the screen.
7. Password protected programmable for user and control parameters.
8. Blue back light.
 
Application:
● Air system—Supply air cascade control;
● Air/water system—for 2-pipe or 4-pipe HVAC system, radiator or roof refrigeration;
● Water system: Ground heating, radiator or roof refrigeration;
● For temperature controlling of single room, apartment in hotel or meeting room 
 
Input/output requirement: 
1. Temperature control for 2-pipe or 4-pipe HVAC system. 
2. One built-in temperature sensor and one external temperature sensor. Optional connection for external temperature sensor or built-in temperature sensor via setting parameter.
3. Two analog outputs configuration: analog output voltage (0-10VDC) or Current (0-20mA) control signals can be chosen   via a jumper to control proportional valve.
4. Three digital outputs configuration: three 5A/24VAC or three 5A/250VAC.
According to the change of jumper, control float-point valve, air damper or remote boot Fan motor and three-speed Fan.
 
Technical Specification
1.Power Supply:Operating Voltage: 24V AC 50/60 Hz ± 10%    
          Power Consumption: Max 3W
          Electrical Connection: terminal Connectors    
          Electrical specification: Signal ground = power ground
2.Product standard:Protection class:IP30    Safety Class:III
3.Environment:Ambient temperature:-10...50℃    Humidity:<95% r.h.
 
Contour dimension
 
Operation Illustration of Controller
1. "P" key function:① Press P key for 3 sec, start user parameter or expert parameter setting function;
                           ② Enter into user parameter or system parameter, click "P" for confirming;
2. Power Key:① Press Power key for 3 sec, power on/ power off
                      ② Enter into user parameter or system parameter, click power key, you can change the set point, via clicking up-down adjustment key.
3. "M" switch key:① Switching between heating and cooling;
                      ② Enter into system parameter, press “M” key repeatedly, you can change the parameter between 1L00, 2L00, IP00 and OP00.
4. "▼" & "▲" key:① You can adjust setting temperature; 
                      ② you can adjust the numerical value correspond to user parameter and system parameter.
             
Parameter specification
Warn:Only professional person can adjust the user parameter and system parameter.
1. user parameter setting:
Operating steps: Press "P" key for 3 sec, "00" appears in the LCD screen flickering continually. Press "up" key, change the password to "08", then press "P" for confirming. You can enter into user parameter setting interface, after "08" stop flickering.
Enter into user parameter setting interface, "UP00" appears on the top of the LCD screen, and the number under "UPOO" is its corresponding value. You can press Power Key to adjust the value. Press "up" key and "down" key to adjust the parameter value, the press "P" key to confirm.
Then, press "up" or "down" key to change the user parameter from UP00 to UP08. 
2. system parameter setting:
Operating steps: Press "P" key for 3 sec, "00" appears in the LCD screen, flickering continually. Press "down" key, change the password to "88", then press "P" for confirming. You can enter into system parameter setting interface, after "88" stop flickering.
Enter into user parameter setting interface, "1L00" appears on the top of the LCD screen, and the number under "1LOO" is its corresponding value. 
① Press “Power” Key, when “1L00” flickering,can setting 1L system parameter. Press "up" key and "down" key to adjust the "1LOO" corresponding value then press "P" key to confirm. 
Then press "up" and "down" key to change the system parameter from 1L00 to 1L12.
② Press “M” key repeatedly, you can change the parameter between 1L00, 2L00, IP00 and OP00.
Repeat ① to change the corresponding value.
 
1: User parameters

Parameter

Description

Range

Standard

UP00

Enable change of operation modes
00=can't  01=can

00,01

01

UP01

Enable change of temperature set points
00=can't  01=can

00,01

01

UP02

Enable change of working modes
Working mode switch: heating/cooling
00=can't  01=can

00,01

01

UP03

State after power failure
00=off  01=last state

00,01

00

UP04

Energy-saving mode open function
00=off  01=on

00,01

00

UP05

Celsius or Fahrenheit
00=Celsius  01=Fahrenheit

00,01

00

UP06-UP18

Reserved parameters

 

 

UP19

Lighting time 0=Normally lighting unit: seconds

00,99

5

 
2: System parameter (The parameter values which can't be changed is the reserved parameters, have no impact on the controller's operation.

Parameter

Description

Ranger

Standard

1L00

Standby set point shift

02—06℃

05

1L01/1L03

Minimum set point limit for cooling/heating

00—10℃

05

1L02/1L04

Maximum set point limit for cooling/heating

00—99℃

35

1L05

Temperature correction value, The actual display/10

00—99℃

00

1L06

Temperature compensation
00=off  01=increase  02=decrease

00—02

00

1L07-1L19

Reserved parameters

 

 

IP00

Selection of temperature sensor 00=Internal sensor NTC,01=External sensor NTC,02=External sensor 0-10V

00—02

01

IP01

Samples taken for averaging control signal

 

10

IP02

Input overrun alarm
00=off  01=on

00,01

00

OP00

Floating point output signal
00=off DO1&DO2,01=on DO1&DO2

00,01

01

OP01

Analog output       
00=on  01=off

00,01

00

OP02

Minimum Limitation of output signal

00—02

00

OP03

Maximum Limitation of output signal

03—10

10

OP04

Time setting for floating point output

15—95

90

OP05

2-pipe or 4-pipe system : 00= 2-pipe, 01= 4-pipe

00,01

00

OP06

Type of digital output: 00=float-point valve;01=3-speed fan output , 02=0-10V

00,01

00

OP07-OP15

Reserved parameters

 

 

OP16

Dead zone between heating & cooling set point, 0.1℃  

00-99

00

OP17

PID Proportional constant

00-99

00

OP18

PID Integration time

00-99

00

OP19

PID Derivative time 

00-99

00

 

 

We could not find any corresponding parameters, please add them to the properties table
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