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TCS Basys Controls SZ1143b Product Manual
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TCS Basys Controls SZ1143b Product Manual

General purpose controller
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Product Manual
Description
The SZ1143b is a microprocessor-based general pur-
pose controller. Because it has four distinct control
sequences, it is designed for use in a wide variety of
applications. These applications are: general control,
remote setpoint control, general input reset ratio control
and differential input (i.e. temperature, pressure, humid-
ity, etc.) control.
Features
• Two 4 to 20 mA analog inputs suitable for a broad
variety of transducers
• Two digital inputs for switches, alarms, clocks, etc.
• One 4-20 mA modulating output
• Two relay outputs
• Adjustable P+I+D control on modulating output
• Adjustable offsets and differentials on relay outputs
• Application sequences include:
• Humidification
• Dehumidification
• Dew Point Control
• High/Low Signal Control
• Differential Temperature
• Differential Pressure
• Static Pressure
• Hot or Chilled Water
• Hot or Chilled Water Reset
• Stand-alone or network operation
Mounting
The SZ1143b is designed for mounting using two #10
sheet metal screws.
2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
SZ1143b
General Purpose Controller
Contents
Description
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Features
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Communicating Thermostats
Communicating Thermostats
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Summary of Contents for TCS Basys Controls SZ1143b

  • Page 1: Table Of Contents

    • Hot or Chilled Water Reset • Stand-alone or network operation Mounting The SZ1143b is designed for mounting using two #10 sheet metal screws. 2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com...

  • Page 2: Wiring

    The SZ1143b is powered from 24 VAC +/- 20 %. Caution: Do not connect to 120 VAC. When Wiring multiple TCS Basys Controls devices are using a single transformer, the polarity of the power wir- The SZ1143b uses terminal designations for wiring. See ing must be maintained because all TCS devices diagram below.

  • Page 3: Programming

    Enable high/Low. Select yes to enable ENABLE HIGH/LOW High/Low control. CONTROL: The SZ1143b may be programmed through the display and keypad, or with a PC. If programming with a PC, the following must be set through the keypad prior to programming: high/Low output Screen.
  • Page 4 Analog output Type Screen. Select occupied deadband Screen. Enter OCCUPIED MOD OUT TYPE: whether the analog output will be an occupied deadband. This is +/- the modulated from an endpoint or the mid- DEADBAND: setpoint where no control is done, during MIDPOINT point.

  • Page 5: Operation

    (+) terminal of the transmitter and connect the IN1 (or IN2) terminal of the SZ1143b to the (-) terminal of the transmitter. Leave the respective RTN1 or RTN2 jumper installed. This jumper connects terminal RTN1 or RTN2 digitaI Input 2 Mode Screen.
  • Page 6 18.75 dEW PoINT CoNTRoL AI2 ModE / PARAMETERS The analog output and digital outputs on the SZ1143b Analog input two can be selected as either "Monitor", can be setup to use a calculated dew point temperature "Remote Setpoint" or "Reset".
  • Page 7 (m A) (m A) (m A) The SZ1143b will control either two stages of “heating” or “cooling” or will control one stage of each. Heating refers to the Relay Output energizing on a "fall in input", while Cooling refers to the Relay Output energizing on a "rise in input".

  • Page 8: Checkout & Troubleshooting

    Analog output Not Working Properly TCS V2.2 (c) Check wiring. A separate transformer should be used for the SZ1143b and a separate transformer should be used for the modulating device. Check to make sure that the analog output is programmed correctly.

  • Page 9: Led Description

    LED Description Check the Monitoring Screens. The “AO” Screen will tell you what the SZ1143b is trying to put out for an output. Compare this with the actual position of the modulating PRogRAM/dATA device. The Program/Data LED will be lit when the controller is with- in the programming or clock setup menus.