Dwyer SCD User Manual

5011654201-SCD1

2007-01-12

Install within

or high humidity and prevent

SCD1000/2000

Temperature Controller

Instruction Sheet

Thank you very much for choosing Love Controls SCD Series Temperature Controller. Please read this instruction sheet before using your SCD series to ensure proper operation and please keep this instruction sheet handy for quick reference.

DANGER: ELECTRIC SHOCK!

SCD1000 is an OPEN-TYPE Process Control Equipment and SCD2000 is an OPEN-TYPE Process Control Accessory. These devices are microprocessor-based temperature regulating controllers which may be provided with normally closed and/or open contacts. They are intended for installation completely within an overall panel or process control enclosure and are used in heating or cooling applications. Please a separate UL Listed enclosure only, keep the enclosure away from airbome dust electric shock or sudden shock. Also, it is equipped with protective methods such as some special tool or key to open the enclosure, so as to avoid the hazard to users or any damage to the controller.

1. Prevent dust or metallic debris from falling into the controller that will cause malfunction.

2. Do NOT modify or disassemble the controller.

3. Do NOT connect the controller to “No Used” terminal.

4. Do not install and/or use the controller in places of: (a) dust or corrosive gases and liquid; (b) high humidity and high radiation; (c) vibration and shock; (d) high

voltage and high frequency.

5. Switch of the power when wiring and changing the input sensor.

6. Make sure to use compensating wires that match the thermocouple types when extending or connecting the

thermocouple wires.

7. Shorten the wire when wiring a platinum resistance thermometer (RTD) to the controller and separate power

cable from load wires to prevent interference and conductive influence.

8. Make sure power cables and signal devices are installed properly before switching on the power; otherwise

serious damage may occur.

9. Do NOT touch the terminals or repair the controller when the power is switched on to prevent electric shock.

10. Wait at least one minute after the power is switched off to allow capacitors to discharge, and DO NOT touch

any internal circuit within this period.

11. Do NOT touch internal terminals no matter power is switched on or off.

12. To ensure temperature accuracy, keep the controller away from the heating source.

MODEL NAME EXPLANATION

PRECAUTIONS

SCD SCD series Temperature Controller

1 Controller Position 2 Auxiliary Output

3 4 Optional

5 Main Output Type

 Standard: DC24V input, Relay output for 2nd group, RS-485 communication.

Groups

1: first controller 2: controller in parallel 0: standard, 2 groups output, no auxiliary output 1: 1 group auxiliary output. Not available now. 2: 2 groups auxiliary output. Not available now. 00: standard 01: CT input. Not available now. 02: Event input. Not available now. R: Relay output SPST, 250VAC, 3A V: Voltage Pulse output 12V +10%~ -20% C: Current output 4 ~ 20mA L: Linear Voltage output 0 ~ 10V

Rated 24 Vdc, Max. 24 W combined, 3 W + 3 W x no. of SCD2000 (max. 7

Extension hole of the extension unit mounting

mounting

FUNCTION AND SPECIFICATION

Power Supply DC24V. Isolated switching power Voltage Range Rated voltage: 90% ~ 110%

Power consumption

connected) Thermocouple: K, J, T, E, N, R, S, B, L, U, TXK

Sensor Type

Platinum RTD: Pt100, JPt100

Linear DC input: 0 ~ 5V, 0 ~ 10V, 0 ~ 20mA, 4 ~ 20mA, 0 ~ 50mV Sampling Rate Analog input: 0.15 sec. Thermocouple or Platinum RTD: 0.4 sec. Control Method PID , PID program control, Manual or ON/OFF

Relay output (SPST), Max. load 250VAC, 3A resistive load

Voltage pulse output: DC 12V, Max. output current 40mA Output Type

Current output: DC4 ~ 20mA output (Load resistance: Max. 5,00Ω)

Analog voltage output: 0 ~ 10V (Load resistance shall be higher than

1,000Ω) Output Function

Control output, Alarm output, or Retransmission output (only for linear

voltage and current output as 1

group) Alarm Function 12 Alarm mode selections Communication RS-485 digital communication, 2,400bps ~ 38,400bps. Communication Protocol Mod-bus communication protocol, support RTU/ASCII.

Internal Connection

Provide internal connection terminals to transmit 24V power supply and

communication signal. Vibration Resistance 10 to 55Hz, 10m/s2 for 10min, each in X, Y and Z directions Shock Resistance Max. 300m/ s2, 3 times in each 3 axes, 6 directions Ambient Temperature 0oC to + 50oC Storage Temperature -20oC to + 65oC Altitude 2,000m or less Relative Humidity 35% to 85% RH (non-condensing) Pollution Degree Degree 2

PRODUCT PROFILE AND OUTLINE

SCD1000

1 RUN/STOP switch

3.0

25.2

4.0

25.2

4.0

60.03.4

2 Wiring and Model name 3

DIN fix

I/O terminals LED indicators

5 6

90.0

pins

Specification label 8 Extension port 9

Extension clip

10 DIN rail

3.0

RS-485 communication port

12 Extension clip 13 DC power input

SCD2000

3.0

1 Wiring and Model name 2

DIN rail clip 3 I/O terminals 4

LED indicators 5 Extension hole of the extension unit

90.0

pins 6 Specification label 7 Extension port

Extension clip

8 9 DIN rail

10 Extension port

3.0

Heating Hysteresis

Cooling Hysteresis

Output

Heating

Set Point

Output

Set Point

Figure 2: PID Control,

forward (cooling) control

reverse (heating) control

INPUT SENSOR TYPE

Input Selection for SCD series:

Input Sensor Type Register Value

Available Range 0 ~ 50mV Linear Voltage Input 17 0 ~ 50mV 4 ~ 20mA Linear Current Input 16 4 ~ 20mA 0 ~ 20mA Linear Current Input 15 0 ~ 20mA 0 ~ 10V Linear Voltage Input 14 0 ~ 10V 0 ~ 5V Linear Voltage Input 13 0 ~ 5V Platinum RTD (Pt100) 12 -200 ~ 600oC (-328 ~ 1112oF) Platinum RTD (JPt100) 11 -20 ~ 400oC (-4 ~ 752oF) Thermocouple TXK type 10 -200 ~ 800oC (-328 ~ 1472oF) Thermocouple U type 9 -200 ~ 500oC (-328 ~ 932oF) Thermocouple L type 8 -200 ~ 850oC (-328 ~ 1562oF) Thermocouple B type 7 100 ~ 1800oC (212 ~ 3272oF) Thermocouple S type 6 0 ~ 1700oC (32 ~ 3092oF) Thermocouple R type 5 0 ~ 1700oC (32 ~ 3092oF) Thermocouple N type 4 -200 ~ 1300oC (-328 ~ 2372oF) Thermocouple E type 3 0 ~ 600oC (32 ~ 1112oF) Thermocouple T type 2 -200 ~ 400oC (-328 ~ 752oF) Thermocouple J type 1 -100 ~ 1200oC (-148 ~ 2192oF) Thermocouple K type 0 -200 ~ 1300oC (-328 ~ 2372oF)

Note 1: An internal precision resistor for the current input is built-in, please refer to item 12, How To Set Up Current Input. Note 2: Factory setting: PT100 input. It is adjustable for linear input and feedback ranges. The default range of input feedbadk is -999 ~ 9,999. For example, when a 0 ~ 20mA analog input is selected as the input temperature sensor type, -999 indicates 0mA and 9,999 indicates 20mA. If the user changes the input range to 0 ~ 2,000, 0 indicates 0mA and 2,000 indicates 20mA. One display scale equals to 0.01mA.

OUTPUT FUNCTION

Output control for SCD is selective: Control output (heating, cooling), Alarm output, or Retransmission output. Control Output:

Temperature can individually be controlled by two groups of outputs: cooling (forward) or heating (reverse). When Dual Loop output control is used, two output controls shall be designed for cooling (forward) or heating (reverse). If two control outputs with the same direction are performed, only the 1

group of control period is valid.

Control methods: PID control, ON/OFF control, Manual control, and PID program control.

Single-output Control:

100%

Heating Cooli ng

OFF

Set Point

Figure1: ON-OFF control of single output

Cooling

Set Point

100%

Figure 3: PID Control,

+ 7 hidden pages