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MultiScan TD-32 series Operating Manual

Reciprocating compressor controller
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MultiScan
OPERATING MANUAL
MODEL TD-32-R
TD-32 SERIES
UP/DOWN
PUSH FOR
SETTING
SELECTING
ENTER
AUSTRALIAN MADE
RECIPROCATING COMPRESSOR
Comp-Stat 1234 TS4cn
Suc Press +298
Dis Press +1099
Oil Press +198
CONTROLLER
INSTRUMENTS
INSTRUMENTS
KPA
KPA
KPA

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Summary of Contents for MultiScan TD-32 series

  • Page 1 MultiScan OPERATING MANUAL MODEL TD-32-R TD-32 SERIES INSTRUMENTS UP/DOWN Comp-Stat 1234 TS4cn Suc Press +298 Dis Press +1099 PUSH FOR Oil Press +198 SETTING SELECTING ENTER AUSTRALIAN MADE RECIPROCATING COMPRESSOR CONTROLLER INSTRUMENTS...
  • Page 2 Specifications of the MultiScan Model TD-32-R and Control Modules Associated with this unit are subject to change without notice. Twite Instruments Pty. Ltd. or any of its Partners, Principals or Employees cannot be held responsible or liable for any loss of product, produce or buildings where any of Twite Instruments Pty.

  • Page 3: Table Of Contents

    MultiScan Digital Temperature Input Terminals 12-13 MultiScan Analog Temperature Input Terminals 14-15 Temperature channels used for control 16-17 MultiScan Pressure & 4-20ma Input Terminals Up to 8 Possible 18-19 MultiScan Digital Input Terminals 20-21 MultiScan 4-20ma Current Input Terminals MultiScan 4-20ma Current Output Terminals...
  • Page 4 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL Contents SETTING FUNCTIONS 64-66 Overview Functions and the No. of each 65-66 "Control Auto or OFF" "Compressor Set Point" "Compressor Diff'tial" "Comp Slow Load Time" "Fast Load Set Point" "Comp Fast Load Time"...
  • Page 5 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL Contents "Dig Temp's Connected" "PT100 Temp Connected" "Press's Connected" "Set 4-20 Input Span" "Digital IN Connected" "Digital IN Inverted" "Temp Sen's Comp Ctrl" "Temp Sen's Comp Suc" "Comp Tmp Sen for Dis" "Temp Sensors for Oil"...
  • Page 6 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL Contents STARTUP DEFAULT SET POINTS & COMPLETE RESET SET POINTS CRC:- Cyclic Redundancy Check & Limp Home VERSION NUMBER DEFAULT VALUES 90-91 SPECIFICATIONS 95-96...
  • Page 7 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL...

  • Page 8: Mounting Dimensions

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION :- Din Rail Mount Size of Unit. 90mm...

  • Page 9: Terminal Numbers And Position

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION :- Terminal Numbers.

  • Page 10: Multiscan Positioning And Mounting

    Ground, 2 = the negative or ground side and 3 = the positive side). NOTE:- If more than one MultiScan is connected to the same 24v dc power sup- ply, all terminals numbered 2 must be connected to the same side of the 24v dc (ground) and all terminals numbered 3 must be connected to the other side of the 24v dc (positive).

  • Page 11: Control Output Power Connections

    Power for compressor and condenser control can be up to 24 V ac. and connected to the terminal Block MultiScan Control Output Power Connections. Voltage on any control output and common must not exceed 24 volts AC and Total Current of all outputs Must Not Exceed 5 amps.

  • Page 12: Multiscan Digital Temperature Input Terminals

    Temperature probes are fitted with 1 meter of cable each (may be extended to a maximum distance of 100 meters using twisted pair shielded cable). The shield must be connected to ground at the MultiScan terminal number 50 and the shield of the sensor cable, the positive, terminal number 48 must be connected to the white wire of the sensor and the signal, terminal number 49 must be connected to the blue wire of the sensor.
  • Page 13 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. MultiScan Digital Temperature Input Terminals Cont :- DS18B20 Digital Type. Up to 8 temperature sensors may be connected SHIELD--GROUND SIGNAL--BLUE WIRE + POSITIVE--WHITE WIRE Types of sensors Available PROBE PLASTIC SHEATH 40 X 6 MM APPROX.

  • Page 14: Multiscan Analog Temperature Input Terminals

    AD590 Anolog Type (up to 7 temperature sensors may be connected) But not both types on the same MultScan. When the MultiScan is ordered, the type of sensor to be used must be stipulated as the PCB must be configured by the manufacture.
  • Page 15 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. MultiScan Analog Temperature Input Terminals cont:- PT100 Analog Type (up to 7 temperature sensors may be connected):- Terminal No. 57 - Shield of each cable. 58 - Sensor number 1 first wire.

  • Page 16: Temperature Channels Used For Control

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. MultiScan Analog Temperature Input Terminals cont:- SENSORS CONNECTED AD590 SENSOR No 7 SENSOR No 6 SENSOR No 5 SENSOR No 4 SENSOR No 3 SENSOR No 2 SENSOR No 1 SHIELD...
  • Page 17 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. Temperature and pressure channels used for control: Oil probe temperature: Any temperature sensor can be used for the oil probe and can be set by the end user. If more than one sensor is selected, the average of all sensors that return a valid tem- perature are averaged and is the temperature used.

  • Page 18: Multiscan Pressure & 4-20Ma Input Terminals Up To 8 Possible

    The cable from the MultiScan to the transducers must be twisted pair shielded type and can be up to a maximum distance of 300 meters. The shield must be connected at the MultiScan end only and all connections must be kept dry and clean.
  • Page 19 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. MultiScan Pressure & 4-20ma Input Terminals cont.:-...
  • Page 20 MultiScan Pressure & 4-20ma Input Terminals cont.:- The current input is via a 4-20ma transducer and can be loop powered or not. Shown below are the two ways of interfacing the transducer to the MultiScan. The same is used for the input terminals 7 to 12.

  • Page 21: Multiscan Digital Input Terminals

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. MultiScan Digital Input Terminals:- 8 Digital inputs are supplied. All inputs are optically isolated. Each Digital input is ON if its input is connected (shortage) to the COM pin of the digital input terminal strip and OFF if not connected (open circuit) if the function "Digital IN Inverted"...

  • Page 22: Multiscan 4-20Ma Current Input Terminals

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. CompScan Digital Input Terminals cont.:- Descriptions:- 21 - Common for all 8 digital inputs. 20 - Remote RUN Input. (IF NOT USED THE UNIT WILL RUN ON START UP IF FUNCTION 1 (CONTROL AUTO OR OFF) IS SET TO YES).

  • Page 23: Multiscan 4-20Ma Current Output Terminals

    MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. MultiScan 4 to 20 ma Output Terminals:- The 4 - 20ma outputs are for variable speed motor on the compressor It is recommended that a 4-20ma isolator is used. The components are available from the manufacturer and must be wired as shown below.

  • Page 24: Multiscan Alarm And Output Terminals

    The Relay is energized (powered on) when not in the alarm state and the normally connected terminal is active (connected). This allows for an alarm to be activated us- ing a battery backup alarm system to trigger if the MultiScan unit losses power. Internal Relay...

  • Page 25: Multiscan Rs485 Terminals

    20 seconds using the 4 wire RS485 serial only. See later for compressor control. The MultiScan compressor section is one of a number (1 to 27 set in setting func- tions) connected together through the RS485 Terminals as below.

  • Page 26: Multiscan Rs485 Terminals

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. MultiScan RS485 Terminals:- TempScan Connected for Compressor Control cont. The connection to each unit must be continuous from the TempScan then one to the next then the next etc.. The units must be connected in a daisy chain configuration and not spider from one point.

  • Page 27: Multiscan 2 Wire Serial Inputs

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. MultiScan 2 Wire Serial Inputs :- TempScan Connected for Compressor Control cont. The 2 wire serial can be used alone or in conjunction with the 4 wire serial control from the TempScan. The display ("Comp-Stat 123 TS2cn" on top line) will indicate whether the 2 wire communications are successful, the right hand position will show "--"...

  • Page 28: Multiscan 2 Wire Serial Inputs

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. MultiScan 2 Wire Serial Inputs :- TempScan Connected cont. To set the DIP switch. Remove the knob by pulling straight out. Remove the front panel by levering it out from the display end and two sides (top and bottom) using a small screw driver being careful not to damage the front panel or the unit.

  • Page 29: Multiscan Rs232 Terminals

    All MultiScan units have a RS232 port. Computer or Modem Connected:- A Computer is allowed to be connected if The MultiScan unit is set to "Single Stand Alone" using set function "TempScan Connected". For computer or standard modem the cable used is a 9 pin D connector (female) to the RJ45 connector (female 8 way) on the MultiScan available from the manufacture.

  • Page 30: Lcd Display Contrast Adjust

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. LCD Display Contrast Adjust. This trim pot adjusts the intensity of the LIQUID CRYSTAL DISPLAY. This should not normally need adjusting. Remove the knob by pulling straight out. Remove the front panel by levering it out from the display end and two sides (top and bottom) using a small screw driver being careful not to damage the front panel or the unit.

  • Page 31: Battery Replacement

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. Battery Replacement. If the backup battery needs replacing, the display will flash "Replace Battery" on the bottom line each second. Turn off the power to the unit. Remove the knob by pulling straight out.

  • Page 32: Program Chip Replacement

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. Program Chip Replacement. If the program chip needs replacing do the following. Turn the power off to the unit. Remove the knob by pulling straight out. Remove the front panel by levering it out from the display end and two sides (top and bottom) using a small screw driver being careful not to damage the front panel or the unit.

  • Page 33: Expansion Socket

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. Expansion Socket. The Expansion socket is used for other modules to be added if required. Additional LED panel display is available as an optional extra. To install the LED panel display, follow the below diagrams and connect the cable from the TD-32-R expansion socket (making sure the orientation is correct) to the INPUT socket of the TD-32-D board (making sure the orientation is correct).
  • Page 34 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. Expansion Socket cont. The LED display can be mounted onto a front panel. If the LED display touches the front bezel before the unit is secure, use the washers to set the circuit board back so that the display does not touch the bezel.

  • Page 35: Expansion Socket

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. Expansion Socket cont...

  • Page 36: Sensor Positioning (Temperature And Pressure)

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL INSTALLATION CONT. Sensor Positioning (temperature and Pressure) :- Temperature probes and Pressure transducers must be placed in the appro- priate positions in give accurate readings of the process required. The digital temperature sensors must not be exposed to temperatures below -50.0 o C or above +125.0 o C and the analog sensor span is -30.0 oC to...

  • Page 37: Compressor Control

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL OPERATION. Compressor Control:- Stand Alone Control:- The compressor may be controlled using the compressor suction pressure (4-20ma input number 1) or temperature. If temperature control is used, the sensor or sensors may be selected from any one or multiple sensors. If multiple sensors are selected, it uses the average of selected sensors for control.
  • Page 38 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL OPERATION CONT. Compressor Control cont:- Stand Alone Control cont:- Step Amount. The step amount when using variable speed drives can be set between 1 and 10 per- cent for each step for each time the compressor needs to be loaded or unloaded.
  • Page 39 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL OPERATION CONT. Compressor Control cont:- Stand Alone Control cont:- Equalizer Solenoid. An equalizer solenoid may be used to bypass the suction to discharge lines on motor start. The equalizer solenoid is turned on by half the set point (time set in seconds) before the motor starts and remains on for half the set point (time in seconds) after the motor starts.
  • Page 40 4 wire serial communications if connected and the function "Com- pressor Number ID" is set to the required number. The MultiScan compressor alarm functions will still operate and turn the compressor off if required. The equalizer solenoid is used for this control type and is set and operated by the...
  • Page 41 TROLLED IN STEPPED MODE, Stage 1, Stage 2, Stage 3 etc. TempScan Compressor Control using 2 Wire Communications only cont:- Compressor number DIP switch settings for MultiScan compressor control using 2 wire serial wire and or 4 wire serial comms (stepped). CHAN...
  • Page 42 MultiScan compressor control will load and unload on the stages set by the TempScan. If the TempScan is set to variable the MultiScan will turn on stage 1 when required and after the motor has started for 15 seconds all other stages...
  • Page 43 MultiScan compressor control will load and unload on the stages set by the TempScan. If the TempScan is set to variable the MultiScan will turn on stage 1 with the motor output on when required and after the motor has started for 15...
  • Page 44 TempScan Compressor Control using 4 Wire (RS485) & 2 Wire Communi- cations cont:- NOTE:- The equalizer solenoid is not available when a TempScan is controlling the compressor in this mode. Compressor number DIP switch settings for MultiScan compressor control using 2 wire and 4 wire serial comms (variable). CHAN SWITCHES...

  • Page 45: Alarm Action

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL OPERATION CONT. Alarm Action:- Some alarms will turn the system off and some will indicate the alarm but the system will still run. If any sensor used in a control temperature/pressure goes into alarm, that control temperature/pressure will alarm and the system will shut down.
  • Page 46 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL OPERATION CONT. Alarm Action cont.:- The following is the display for each alarm and its meaning. The N = No alarm on this input. The M = the compressor will turn off and A = Only an alarm will sound on this input but the system will continue to run.

  • Page 47: Alarm Action

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL OPERATION CONT. Alarm Action cont.:- 32 "Spare Alarm 1" N Not used 33 "Remote ON " N Not used 34 "Remote OFF" Digital input to shut the system down. (10 sec delay). 35 "Water Jack"...

  • Page 48: Alarm History

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL OPERATION CONT. Alarm History cont:- The Following is a Typical Alarm History Display. lArm istory Hows 40 A lArms 20:45 04 J +44.0 If no alarm is in a position, the following will be displayed.
  • Page 49 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DATA LOGGING CONT. Press the knob briefly to hold the display. Rotating the knob will go to the next/pre- vious time to be displayed. When the displayed time reaches the end/start the display will roll over to the first/ last displayed log.

  • Page 50: Up/Down Knob And Switch Functions

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL UP/DOWN KNOB AND SWITCH FUNCTIONS :- Overview The following switches are available for setting of functions etc. The ROTARY/PUSH knob - for displaying different pages, data logged, alarms and setting/entering val ues of functions.

  • Page 51: Display

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DISPLAY PAGES. The following displays are available by rotating the "ROTARY/PUSH" knob clock- wise and anticlockwise while no setting of functions is being done. NOTE: If after 240 seconds the knob was not used, the display will revert to page 1.

  • Page 52: Display Pages

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DISPLAY PAGES CONT. Page 2: The temperature of the digital sensor number 1 on the top line. The temperature of the digital sensor number 2 on the second line. The temperature of the digital sensor number 3 on the third line.
  • Page 53 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DISPLAY PAGES CONT. Page 4: The temperature of the Analog sensor number 1 on the second line. The temperature of the Analog sensor number 2 on the third line. The temperature of the Analog sensor number 3 on the fourth line.
  • Page 54 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DISPLAY PAGES CONT. Page 6: Digital Inputs Page. The status of all 8 digital inputs on the top line. O=Off |=ON N=Not-Con on the second line. Each digital input number on the third line.
  • Page 55 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DISPLAY PAGES CONT. Page 7: Data Logged Page. To display data logged, rotate the knob until the data logg display page is displayed, displays "Data Logged Display" on the top line. Press the knob briefly to hold the display. Rotating the knob will go to the next/pre- vious time to be displayed.
  • Page 56 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DISPLAY PAGES CONT. Page 8: Alarms Page. To scroll though alarms, turn the knob to the alarm page and press the knob once then turn the knob clockwise or anticlockwise to display each alarm.
  • Page 57 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DISPLAY PAGES CONT. Page 9: Alarm History Page. The alarm history displays the last 40 alarms that were active. After 40 alarms have been logged the next alarm is placed over the first alarm that was saved and each suc- cessive alarm placed over the next earliest alarm etc..
  • Page 58 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DISPLAY PAGES CONT. Page 10: Warnings Page. To scroll though warnings, turn the knob to the warn logged page and press the knob once then turn the knob clockwise or anticlockwise to display each warning.
  • Page 59 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DISPLAY PAGES CONT. Page 11: The compressor suction temperature on the top line. The compressor suction pressure on the second line. The compressor saturated temperature on the third line. The compressor super heat on the fourth line Comp Suctn +27.2...
  • Page 60 Page 14: This display is shown for 5 seconds on start up. The time and date on the top line. The copyright on the second line. MultiScan Model No. on the third line. The model number and version on the fourth line 13:19-26...

  • Page 61: Password

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL PASSWORD:- Users Password :- When the password is required (can be turned on or off) the display will request the password when “SET” knob is pressed then "ENTER" knob is pressed to select that function to change/check with the following message.

  • Page 62: Change Password

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL PASSWORD CONT.:- Change Password (use "SET" knob, "ENTER" knob, rotate UP/DOWN knob.) Allows the Password to be changed. If the Password is inactive (i.e.. is set to OFF) this function will automatically require the users password before you can change it.

  • Page 63: Setting Functions

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL SETTING FUNCTIONS. Overview: To set any function, the following switches are used:- If the password is required, then it must be entered before any function can be changed. The large knob is used for "SET FUNCTIONS" key on the first press and then be- comes the "ENTER"...

  • Page 64: Overview

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL SETTING FUNCTIONS. Overview cont.: When a flashing cursor is displayed on the Liquid Crystal Display the Value or Func- tion may be changed to another by rotating the knob (“UP/DOWN”). After the correct value has been entered press the “ENTER” knob and the value will be entered into memory for all the channels selected if required and will not be af- fected by a power failure.

  • Page 65: Functions And The No. Of Each

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS. Functions and the No. of each:- "Control Auto or OFF" Turns the control from auto or OFF. "Compressor Set Point" The compressor set point pressure/temperature. "Compressor Diff'tial" The compressor differential pressure/temperature. "Comp Slow Load Time"...
  • Page 66 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS. Functions and the No. of each cont:- "Dig Temp's Connected" The 8 digital temp sensors that are connected. "Anolog Tmp Connected" The 7 Analog temp sensors that are connected. "Press's Connected" The pressure and 4-20ma inputs connected.

  • Page 67: Control Auto Or Off

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Control Auto or OFF” Sets whether the compressor is on automatic or off. PRESS “KNOB” ROTATE KNOB   TO SELECT "Control Auto or OFF" on bottom line. PRESS “KNOB” ENTER PASSWORD IF REQUIRED ROTATE KNOB ...

  • Page 68: Fast Load Set Point

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Fast Load Set Point” Sets the value at which the compressor loads using the fast load set point. If the proportional setting is more than 0, this time is automatically adjusted down as the set point increases to the actual control value.

  • Page 69: Cmp Start/Start Time

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Cmp Start/Start Time” Sets the start to start time that the compressor is allowed to start again from the last time it started in minutes. PRESS “KNOB” ROTATE KNOB   TO SELECT "Cmp Start/Start Time" on bottom line.

  • Page 70: Comp Stages Inverted

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Comp Stages Inverted” For inverting compressor stages. If set to NO, all stages (1 to 4 will energize to load. If set to YES all stages (2 to 4) will energize to unload, stage 1 is used for motor start. If the compressor is off all stages will not be energized.

  • Page 71: Compre'r Step Amount

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Compe'r Step Amount” Sets the step amount in percentage that the compressor will load and unload each time if a variable speed drive is used. PRESS “KNOB” ROTATE KNOB   TO SELECT "Compe'r Step Amount" on bottom line.

  • Page 72: Type Of Compressor

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Type of Compressor” Sets the type of compressor that is connected to the unit. PRESS “KNOB” ROTATE KNOB   TO SELECT "Type of Compressor" on bottom line. PRESS “KNOB” ENTER PASSWORD IF REQUIRED ROTATE KNOB ...

  • Page 73: Warn Temp From High

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Warm Temp From High” Sets the warning alarm temperature for temperature sensors that are from the high alarm set point. Only sensors that are set to "Connected" will be available for selection.

  • Page 74: Hi Temp Alarm Delay

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Hi Temp Alarm Delay” Sets the high alarm temperature delay for temperature sensors. Only sensors that are set to "Connected" will be available for selection. PRESS “KNOB” ROTATE KNOB   TO SELECT "Hi Temp Alarm Delay" on bottom line.

  • Page 75: Warn Press From High

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Warm Press From High” Sets the warning alarm pressure for pressure sensors that are from the high alarm set point. Only sensors that are set to "Connected" will be available for selection.

  • Page 76: Hi Press Alarm Delay

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Hi Press Alarm Delay” Sets the high alarm delay for pressure inputs and 4-20ma inputs. Only sensors that are set to "Connected" will be available for selection. PRESS “KNOB” ROTATE KNOB   TO SELECT "Hi Press Alarm Delay" on bottom line.

  • Page 77: Pt100 Temp Connected

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Analog Tmp Connected” Sets whether each PT100 or AD590 (depending on which type is intsalled) type temperature sensor is connected or not. All PT100 or AD590 sensors may be selected in this function.

  • Page 78: Digital In Connected

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Digital IN Connected” Sets whether each digital input is connected or not. All 8 channels may be selected in this function. PRESS “KNOB” ROTATE KNOB   TO SELECT "Digital IN Connected" on bottom line.

  • Page 79: Temp Sen's Comp Suc

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Temp Sen's Comp Suc” Sets the temperature sensors that are used for the compressor suction line to calculate the super heat. All sensors (both digital and PT100) that are set to "Connected"...

  • Page 80: Sump Heat Set Point

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Sump Heat Set Point” Sets the temperature for the sump heater control. This is only used when the compressor is off. PRESS “KNOB” ROTATE KNOB   TO SELECT "Sump Heat Set Point" on bottom line.

  • Page 81: Set Time & Date

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Set Time & Date” Sets the Real Time Clock PRESS “KNOB” ROTATE KNOB   TO SELECT "Set Time & Date" on bottom line. PRESS “KNOB” ENTER PASSWORD IF REQUIRED ROTATE KNOB   FOR THE HOURS (24 HOUR) [Hours] PRESS “KNOB”...

  • Page 82: Change Password

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Change Password” Sets the Password of a number from 0000 to 5999. If the password was not active when this function is selected, the password will be required. If the wrong password is entered, the display will indicate this.

  • Page 83: Set Dig Temp Offset

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Set Dig Temp Offset” Sets an offset into non volitile ram for any or all digital temperature sensors. This is required if the temperature reading is wrong. To check the accuracy of the sensors, place them into an ice bath (0.0 oC) and check the reading.

  • Page 84: Add Dig Temp Sensor

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Add Dig Temp Sensor” All digital temperature sensors have a unique serial number embedded within the sensor. To add a sensor or replace an existing sensor, do the following. Remove all currently connected senors (hard wired). Place the new sensor into the correct terminals and do the following.

  • Page 85: Number Of Resets S/N

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Number of Resets S/N” Displays the number of times the unit was reset (power failures) and the serial number of the unit. After this function the number of resets counter is set to 0.

  • Page 86: High Current Alarm

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “High Current Alarm” Sets the high current alarm for the compressor motor. The alarm is not used if the motor is off and there is a 10 second delay before the alarm can be activated.

  • Page 87: Reset Password

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Reset Password” Resets the password to 888. The x 50 must be pressed while this is done for the last "KNOB" push. If the x50 switch is not pressed the display will indicate that reseting the password is not allowed.

  • Page 88: Temp Sen For Intermd

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL FUNCTIONS CONT. “Temp Sen for Intermd” Sets the temperature sensors that are used for the compressor intermediate probe. All sensors (both digital and analog) that are set to "Connected" will be available for selection.

  • Page 89: Startup Default Set Points & Complete Reset

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL STARTUP DEFAULT SET POINTS & COMPLETE RESET. If for any reason the unit locks up, the unit may be reset and the real time clock restarted and all set points set to the first set of default values by doing the fol- lowing.

  • Page 90: Default Values

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DEFAULT VALUES. "Control Auto or OFF" AUTO "Compressor Set Point" "Compressor Diff'tial" "Comp Slow Load Time" SECONDS "Fast Load Set Point" "Comp Fast Load Time" SECONDS "Comp'or Unload Time" SECONDS "Pump Down set Point"...

  • Page 91: Default Values

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL DEFAULT VALUES. Default Values cont:- 37 "Digital IN Connected" REMOTE RUN CONNECTED COND WATER LEVEL CONNECTED REST NOT CONNECTED 38 "Digital IN Inverted" NONE 39 "Temp Sen's Comp Ctrl" Dig Temp Number 1 40 "Temp Sen's Comp Suc"...
  • Page 92 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL...
  • Page 93 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL...
  • Page 94 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL...

  • Page 95: Specifications

    TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL SPECIFICATIONS A-32-R ALL SET POINTS ARE FOR INDIVIDUAL CHAN’S WHERE APPLICABLE. TEMPERATURE INPUTS (Digital) 18B20 temperature sensor (Analog) PT100 or AD590 temperature sensor. MAX TEMPERATURE INPUTS 4-20ma INPUTS SUPPLY 12V DC MAX 4-20ma INPUTS...
  • Page 96 TWITE INSTRUMENTS MultiScan MODEL TD-32-R OPERATING MANUAL SPECIFICATIONS A-32 CON’T ALARM INPUT short to signal common for instant audi- (DIGITAL ACTIVATE) ble alarm. DATA LOGGING TIME BETWEEN :- 1, 5, 10, 30, 60, 120 minutes or none. DATA LOGGING MAXIMUM 220 loggs.

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Td-32-r

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