TCS Basys Controls SZ1143b Product Manual Download Page 2

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Wiring

The SZ1143b uses terminal designations for wiring. See

diagram below.

TRANSMITTER WIRINg

The SZ1143b accepts two 2-wire, 4-20mA transmitters.

Use our TH Series for relative humidity sensing, TS/TX

Series for temperature sensing, or TD/TL Series for dif-

ferential air sensing.

PoWERINg ThE SZ1143b

The SZ1143b is powered from 24 VAC +/- 20 %.

Caution

: Do not connect to 120 VAC. When

multiple TCS Basys Controls devices are using a

single transformer, the polarity of the power wir-

ing must be maintained because all TCS devices

are half-wave rectified and have common return

paths.
If wiring for communications, dedicated power must be

used to power the controller. Several S series controllers

may be powered from the same transformer, provided

that the transformer has sufficient power. (Supertrols

require 5 VA @ 24VAC.)

AI1

AI2

Summary of Contents for SZ1143b

Page 1: ...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 d...

Page 2: ...r sensing Powering the SZ1143b The SZ1143b is powered from 24 VAC 20 Caution Do not connect to 120 VAC When multiple TCS Basys Controls devices are using a single transformer the polarity of the power...

Page 3: ...the analog output range will be 0 20mA or 4 20mA This screen is the last screen if High Low control mode is enabled and is the same as step 22 when not enabled Enable Dew Point Control Select yes to e...

Page 4: ...t Type Screen Select whether the analog output will be modulated from an endpoint or the mid point Note Set to MIDPOINT if dew point control is selected Analog Output Unoccupied Action Screen Select w...

Page 5: ...e IN1 or IN2 terminal of the first SZ1143b Remove the RTN1 or RTN2 jumper from the second SZ1143b Refer to Sharing analog inputs on an SZ1143b Application note for more detail HIGH LOW CONTROL The ana...

Page 6: ...gramming screens 22 through 31 AI2 MODE PARAMETERS Analog input two can be selected as either Monitor Remote Setpoint or Reset If monitor is chosen the analog output and digital out puts are controlle...

Page 7: ...point In most cases the first stage is set to zero The differential value is the differ ence between the on and off points Setpoint O N O N O N O N O FF O FF O FF O FF Differential Differential O ffse...

Page 8: ...res off will instantly turn all outputs off and reset the controller Analog Output Not Working Properly Check wiring A separate transformer should be used for the SZ1143b and a separate transformer sh...

Page 9: ...ed Setpoint and Analog Output Screen Shows the current setpoint used for control and the output value for the analog output The analog output is dis played as a percentage 0 100 Analog Output Screen S...