Z31 Photo

Z31-A GS (12~24 VAC/VDC)
Single Set-Point Temperature Controller

Z31A-GS is a single set-point digital microprocessor based temperature controller for Cooling or Heating applications. The instrument with an ON/OFF control mode has one 16A-AC1 relay output (SPDT) and one input for an NTC or PTC temperature probe, that can be configured.

Price: $169.00
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The Z31 Series is a replacement for the TLZ10 and TDH-01 Series. The new Z31 version is identical in size and functionally to the older models in many respects, including having a 16 amp SPDT Relay output. However, the list of parameters has been slightly modified. Buyers seeking a replacement for an original TLZ10 or TDH-01 should check the Z31-A User Manual to ensure that it has the functions (parameters) they require.

Z31A-GS Temperature Controller

Z31A-GS is a 12~24 VAC/VDC digital, microprocessor based, temperature controller for cooling or heating applications with a single set-point temperature and an ON/OFF control mode. The instrument has one 16 amp relay output (SPDT) and one input for NTC or PTC temperature probes, that can be configured. The instrument is equipped with 4 programming keys, a 3-digit display and 1 LED signal.

Other characteristics of the instrument are: Programmed parameters may be protected by using a personalized password, parameters can be uploaded from a programmed unit via the optional A01 device then downloaded to multiple units for quick programming...

We Include an NTC Sensor.

Other available Inputs: 12 VAC/VDC (F type) and 100...240 VAC (H type). Contact us for availability or e-mail: sales@electracool.com

 

* The Z31 Series replaces both the Tecnologic TLZ10 and TDH01 Series. For legacy customers, wiring for the Z31 is identical to the TLZ10 however, there are differences with programming.

 

Z31A-GS Specifications

1 probe input, 1 relay output and buzzer

Power Supply: 12~24 VAC/VDC ± 10% F: 50/60 Hz

Power Consumption: 4 VA

Input: Includes an NTC 103AT-2 (10 kΩ at 25 °C) sensor. Will work with a PTC KTY 81-121 (990 Ω at 25 °C) sensor
Keyboard: Mechanical ("Sensitive-Touch" type available)

Measurement range: NTC: -50...109 °C / -58...228 °F; PTC: -50...150 °C / -58 ... 302 °F

Output: One (1) 16 amp relay output SPDT 16A-AC1 (12 A max for each terminal with extractable terminal block)

Internal buzzer for alarm indication

Case: Self-extinguishing plastic, UL 94 V0

Dimensions: 1/16th DIN, Front Panel 35x75 mm, Depth 64 mm (+ 11.5 mm with extractable terminal block)

Weight: 120 grams approx.

Mounting: Incorporated Flush in panel (thickness max. 12 mm) in 71 x 29 mm hole

Connections: 2.5 mm² screw terminals block or 2.5 mm² extractable screw terminals block for 0.2...2.5 mm² / AWG 24...14 cables.

Degree of protection from panel: IP 65 (NEMA 3S), mounted in panel with gasket

Control: ON/OFF, Stand-By mode

Display resolution: 1 ° or 0.1° (range -99.9 ~ 99.9 °)

Overall Accuracy: ± 0.5% fs + 1 digit

Sampling rate: 130 ms.

Communication and configuration: Universal Programming Key on TTL port

Compliance: Directive 2004/108/CE (EN55022: class B; EN61000-4-2: 8KV air, 4KV cont.; EN61000-4-3: 10V/m; EN61000-4-4: 2KV supply and relay outputs, 1KV inputs; EN61000-4-5: supply 2KV com. mode, 1 KV\ diff. mode; EN61000-4-6: 3V); Directive 2006/95/CE (EN 60730-1, EN 60730-2-9). Regulation 37/2005/CE (EN13485 air, S, A, 2,- 50°C +90°C with probe NTC 103AT11).

Also available with extractable terminal block and "Sensitive Touch" keyboard.

COMMUNICATION ON TTL PORT TO:

  • Universal programming key (optional)
  • Remote display (optional)
UL & CE for TLZ10

UL File no. E212227
Ref. UL/CSA 60730-1-2-9

Other available Inputs: 12 VAC/VDC (F type) and 100...240 VAC (H type). Contact us for availability.

Basic Z31 User Guide

The following Z31 User Guide is intended to assist with the most essential and common programming requirements when used with our thermoelectric assemblies. The guide is exclusively for use with the Z31A (Z31 model A) temperature controller.

 

FAST PROGRAMMING OF SET POINT

Generally we preset controllers to a set-point of +4 °C in the cooling mode.

Press the button/key P then release it. The display will show “SP” alternating with the current temperature set-point value. To change the temperature, press the UP key to increase the value or DOWN to decrease it. When the desired temperature is displayed, press the P button to set the temperature and exit from the Set Point programming mode.

Exiting the Set Point mode by pressing the P key or, will take place automatically if no key is pressed for 10 seconds. After that time the display will return to the normal function mode.

 

PROGRAMMABLE PARAMETERS (FUNCTIONS) TABLE

To access the instrument’s parameters (or functions) press the “P” button and keep it pressed for about 5 seconds until the LED display flashes and the code that identifies the first parameter is displayed.

Using the UP and DOWN keys, select the desired parameter by pressing the “P” button. The display will alternately show the parameter code and its setting. That value can be changed with the UP and DOWN keys.

Once the desired value has been selected or entered, press the “P” again. The new value will be memorized and the display will show only the code of the selected parameter.

Pressing the UP and DOWN keys, it is possible to select another parameter and change it, as described above.

To exit the programming mode, press the “U” button for 2 seconds or don’t press any key for about 30 seconds and the controller will automatically exit the programming mode.

 

CALIBRATION OF THE Z31

If necessary, the fastest method to calibrate the Z31A controller set-point with the actual temperature, as measured with separate thermometer (i.e. hand held infrared) is to use the Probe Calibration parameter.

Press the “P” button and keep it pressed for about 5 seconds until the LED display flashes and the code that identifies the first parameter is displayed.

Using the DOWN key, select the Inputs parameter group “i.” (2nd group down) by pressing the “P” button. With the UP or DOWN key select the Probe calibration parameter “ i.C1” and press the “P” button. The display will show the current value, typically the default of 0.0.

Using the UP or DOWN key set value to the temperature difference observed between the actual and the set-point. Note, this is often a negative value.

Once the desired adjustment has been made, press the “P” again to memorize the value.

Press the “U” button for 2 seconds or don’t press any key for about 30 seconds and the controller will automatically exit the programming mode.

NOTE: The Z31 typically ships from the factory configured to allow for a two (2.0) degree temperature differential between set-point and activation. This reduces the total number of starts, may extend the life of the controller, and the temperature variation is often within an acceptable range, but if your requirements are for tighter control you can reduce the acceptable differential to zero. Push and hold the "P" button until the LEDs flash. Then push the down arrow seven times, until you see "HSEt," indicating hysteresis. Push the "P" button to display the current differential, by default “2.0” degrees. Push the down arrow until "0" or "0.0" is displayed. Leave the controller alone for about 15 seconds, and the controller will be re-programmed.

 

CONFIGURING THE Z31 FOR WARMING

The Z31 can be programmed for either heating or cooling, but not both simultaneously. By default the controller is set for operation in the cooling mode. Since most customers use our thermoelectric assemblies for cooling, our instructions and illustrations are for operation in this mode.

If you would like to use the Z31 for warming with our assemblies the controller must be re-programmed for heating and the polarity to the thermoelectric modules reversed.

Program or Re-program the controller:

Push and hold the "P" button on the Z31 until the LEDs flash. Push the down arrow 11 times until you see "Func," (indicating function). Push the "P" button and "Cool" will be displayed. Push the up or down arrow until "HEAt" is displayed. Leave the controller alone for about 15 seconds, and the controller will be re-programmed for warming.

Wiring:

If wiring a new assembly connect the black lead/s from the TE/s to post 4 on the Z31 and the red lead/s from the TE/s to a NEGATIVE (-) post on the power supply (to change the polarity). Make all other connections to the Z31 and power supply, as described and illustrated above (red to + and black to -) for cooling above.

If you have the Z31 configured for cooling, the red, positive leads are in post position 4 of the Z31 and the negative leads are connected directly to the power supply. To switch polarity you can simply switch the connections. Remove the black leads from the negative post on the power supply and insert them into post 4 on the controller. Place the red leads removed from post 4 of the controller to the same (negative) post that the black leads were removed from. Leave all other connections alone (as per the instructions and illustrations for cooling).

 

SENSOR ERROR (E1)

The Z31 often ships from the factory, configured for use with a "PTC" type sensor. If you get a sensor error (E1), change the setting to accommodate the "NTC" sensor. Push and hold the "P" button until the LEDs flash. Then push the down arrow three times, until you see "SEnS." Push the "P" button to display the type of sensor selected. If "PTC" is displayed, push the down arrow and "NTC" will be displayed. Leave the controller alone for about 15 seconds, and the controller will be re-programmed for use with an NTC.

 

PARAMETER PROTECTION USING A PASSWORD

The instrument has a parameter protection function using a password that can be personalized, through the “t.PP” parameter (#25). If one wishes to have this protection, set the password number desired in the parameter “t.PP”.

Push and hold the "P" button on the Z31 until the LEDs flash. Push the down arrow times until you see "ti," (indicating keyboard functions). Push the "P" button again then the down arrow until " t.PP" is displayed. Push the "P" button again. Select a value to be used for the password. When the number has been set, push the “P” button again to program the controller.

When the password protection is activated, press the “P” key for about 5 seconds, after which the display will show “r.P” . At this point press “P” again and the display shows “0.” Using the UP and DOWN keys, enter the password number you’ve programmed and press the “P” key.

 

RESET PARAMETERS TO DEFAULT VALUE/LEVEL

The instrument allows the reset of all parameters to the original factory defaults.

To restore the Z31A to the original default values, set the value -48 in the “r.P” password request. Confirm the password change by pushing P key and the display it shows "---" for 2 seconds. This indicates the instrument parameters have been reset.

 

KEYBOARD LOCK FUNCTION

To prevent unauthorized tampering you may completely lock the Z31A keyboard.

To activate keyboard locking set the parameter “t.Lo” to a different value than oF.

Push and hold the "P" button on the Z31 until the LEDs flash. Push the down arrow times until you see "ti," (indicating keyboard functions). Push the "P" button again then the down arrow until and "t.Lo" is displayed. Push the "P" button again. Select a positive value to be used for unlocking with the up arrow. When the number has been set, push the “P” button again to program the controller.

Not pressing any key for the time you’ve set in "t.Lo" the instrument automatically disables the normal functions of the keys. When the keyboard is locked, if any of the keys are pushed, the display will show “Ln” to indicate the active lock.

To unlock the keyboard, simultaneously push the P and UP keys for 5 seconds, after which the label “LF” will appear on the display and all the keys will function.

 

Mechanical Dimensions, Panel Cut-out & Mounting

Mechanical Dimensions, Panel Cut-out & Mounting