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Minco CT224 Installation And Operating Instructions Manual

12-channel temperature monitor
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CT224
12-Channel Temperature Monitor
Installation and Operating Instructions
Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com

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  • Page 1 CT224 12-Channel Temperature Monitor Installation and Operating Instructions Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 2 This page left blank intentionally. Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...

  • Page 3: Table Of Contents

    Table Of Contents Introduction Pre-Installation Installation Mounting Wiring Controller Power Inputs Outputs Serial Communications Programming Configuration Using the CT224 Modes / Buttons Entering the Program Settings Setup Worksheet Communications Function Codes Memory Map Specifications Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...

  • Page 4: Introduction

    The CT224 is a universal 12-channel monitor capable of monitoring inputs for any combination of RTDs, Thermocouples, and 4-20mA loop inputs. The CT224 has 5 outputs, 4 of the outputs can be used for warning or shutdown signals, the other output is dedicated to signaling alarm conditions.

  • Page 5: Pre-Installation

    Pre-Installation The first step before installing the CT224 is to determine the input types that will be used. If analog 4-20mA signals will be used as inputs, jumpers under the rear cover will need to be changed. When received, the jumpers are set to allow RTD and thermocouple inputs on all input channels. Analog inputs require that the jumpers be moved to the 4-20mA setting.

  • Page 6: Installation

    Figure 3 – Panel Cutout Slide the CT224 into the cut out, drill holes for the screws or bolts that will fasten the unit to the panel. Be sure that the gasket around the CT224 is compressed between the front cover and the panel so that liquid and debris cannot get behind and inside of the panel.

  • Page 7: Wiring

    Wiring The locations of the connections on the CT224 are shown in Figure 4. The rear cover of the CT224 also shows the connections for each terminal. More detail for each of the connections is given in the following sections.

  • Page 8: Controller Power

    On AC models, the Line and Neutral will be connected to the terminal block in the lower right hand corner on the rear of the CT224. See Figure 5. The lower terminal on the terminal block is used for ground. It is important to connect earth ground to the lower terminal if shielded cable is used for sensors.
  • Page 9 On DC models, the DC voltage is connected to the upper terminals and the terminal block in the lower right corner on the rear of the CT224. See Figure 6. The upper terminal on the control power terminal block is connected to the positive supply voltage, between 18 and 36Vdc.

  • Page 10: Inputs

    Inputs The CT224 can accept any combination of the input types specified in Section 6 at the end of this document. These may include RTDs, thermocouples, and 4-20mA transmitter loops. However, some care must be taken when using multiple inputs so that a safe environment is created for personnel and equipment.
  • Page 11 “Sensor Calc” program to determine the affect of the leadwire. By using this information it is possible to reduce the leadwire error by adjusting the offset. Figure 8 – 2-Wire RTD Wiring Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 12 B terminal and the loop negative should be connected the C terminal. When configuring the CT224 for 4-20mA loops, you must set the jumpers located on the top part of the PCB to the position with out the dot. This is shown in Figure 1 in the Pre-Installation Instruction section.

  • Page 13: Outputs

    C, B, A on the right side of the unit. The CT224 has 5 outputs. Four of the outputs are used for signals and can be configured to trip and untrip in several different ways. The different methods are covered in section 4.

  • Page 14: Serial Communications

    RS485 is used as the medium. The connections on the CT224 are labeled as A, B, and S. The two signal wires are A and B. The A terminal should be connected to the A terminal on the RS232 to RS485 converter. The B terminal should be connected to the B terminal on the RS232 to RS485 converter.
  • Page 15 RS485 RS232 – Wiring diagrams for RS232 and RS485 Figure 11 Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 16 2 other CT224. Figure 12 shows the basic wiring for a chain configuration. Like terminals on the CT224’s should be connected together in the chain, A to A, B to B, S to S. Figure 12 – Master Slave Chain End devices (Master and last Slave) on an RS485 network should be terminated to achieve error-free communications.

  • Page 17: Using The Ct224

    CT224 is powered up it will enter Monitoring Mode. Initially the message “Initializing Inputs” will be shown on the display. The CT224 is evaluating the inputs and initializing the outputs based on the program configuration that has been stored in the device. After a few seconds the screen will change and display an input reading.
  • Page 18 Change Settings - This section is used to configure all inputs and outputs. (May be password protected.) When this section is exited, either due to the 60-second timeout or exited by the user, the CT224 will automatically reset and start scanning with the new program settings. The CT224 will also reset when program settings are changed via the communications link using MincoSoft’s CT224 Software.
  • Page 19 Modbus address of 1. If communications are not used, it is acceptable to leave the default address at 1. If multiple CT224 are to be used, the addresses should be changed to prevent communication errors. The next screen will request setting the baud rate.

  • Page 20: Entering The Program Settings

    B) Entering the Program Settings The first step to take when configuring the CT224 is to decide how you would like the device configured. Configuration is best performed using MincoSoft CT224 Software. If you do not have a computer available for configuration you may also use the keypad on the CT224 to enter the settings.
  • Page 21 Sound Alarm on Trip? –Yes will cause the alarm to sound and alarm output to trip when the reading passes the trip value. Selecting No will not sound the alarm when the outputs are tripped. Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 22 10ºF hysteresis and will trip Output 1 on an over temperature reading. The reading increases to 100ºF, so Output 1 trips. The reading will need to go below 90ºF before Output 1 will reset. Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...

  • Page 23: Setup Worksheet

    Zone 4 _____ Zone 9_____ the rear of the manual for the range of RTD and Thermocouples. Zone 5 _____ Zone 10_____ Zone 6 _____ Zone 11_____ Zone 7 _____ Zone 12_____ Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 24 Sound Alarm on Zone 2 _____ Zone 7_____ Trip? Zone 3 _____ Zone 8_____ Zone 4 _____ Zone 9_____ Zone 5 _____ Zone 10_____ Zone 6 _____ Zone 11_____ Zone 7 _____ Zone 12_____ Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 25 Zone 3 _____ Zone 8_____ Zone 4 _____ Zone 9_____ Zone 5 _____ Zone 10_____ Zone 6 _____ Zone 11_____ Zone 7 _____ Zone 12_____ Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 26 Zone X Trip 2: Zone 2 _____ Zone 7_____ Zone 3 _____ Zone 8_____ Zone 4 _____ Zone 9_____ Zone 5 _____ Zone 10_____ Zone 6 _____ Zone 11_____ Zone 7 _____ Zone 12_____ Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 27 Zone 5 Trip 1: Zone 11 Trip 1: Output1__ Output2__ Output1__ Output2__ Output3__ Output4__ Output3__ Output4__ Zone 6 Trip 1: Zone 12 Trip 1: Output1__ Output2__ Output1__ Output2__ Output3__ Output4__ Output3__ Output4__ Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 28 Zone 3 _____ Zone 8_____ Zone 4 _____ Zone 9_____ Zone 5 _____ Zone 10_____ Zone 6 _____ Zone 11_____ Zone 7 _____ Zone 12_____ Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...

  • Page 29: Communications

    0 … 9, A … F. Modbus addresses are allowed in the range from 1 to 247. If the CT224 is set to a Modbus address of 0, the unit will ignore all signals on the communication inputs.

  • Page 30: Function Codes

    The maximum number of data bytes that can be sent from the CT224 is 32. This is due to the 41 byte limit set for communications. Therefore, the maximum value that can be used as the number of memory locations to read is...
  • Page 31 Low byte of the number of memory locations to read 0CF0 The checksum for the string that was sent The response from the CT224 would look something like the following: (Returned data bytes will obviously vary, depending on the values at those locations.) 0104060001000200030004AEF0...
  • Page 32 Function Code 0x10 – Write program settings The 0x10 function code is used to write program settings to the CT224. When sending the Write Program Settings command, the hexadecimal number 10 will be used. Program settings are shown in the memory map later in this section. The maximum number of data bytes that can be sent to the CT224 is 32.

  • Page 33: Memory Map

    001C - High end of input range 001D - Trip Value 001E - Trip Over or Under 001F - Sound Alarm / Outputs to trip 0020 - Output Reset / Hysteresis Value Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 34 Zone 6 Trip 2 – Trip Value 0043 - Trip Over or Under 0044 - Sound Alarm / Outputs to trip 0045 - Output Reset / Hysteresis Value 0046 Zone 7 Trip 1 – Input Type Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 35 0069 - High end of input range 006A - Trip Value 006B - Trip Over or Under 006C - Sound Alarm / Outputs to trip 006D - Output Reset / Hysteresis Value Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 36 - Zone 5 008D - Zone 6 008E - Zone 7 008F - Zone 8 0090 - Zone 9 0091 - Zone 10 0092 - Zone 11 0093 - Zone 12 0094 Reserved Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 37 - Characters 13, 14 00B7 - Characters 15, 16 00B8 Zone 5 Name - Characters 1, 2 00B9 - Characters 3, 4 00BA - Characters 5, 6 00BB - Characters 7, 8 Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 38 - Characters 11, 12 00DE - Characters 13, 14 00DF - Characters 15, 16 00E0 Zone 10 Name - Characters 1, 2 00E1 - Characters 3, 4 00E2 - Characters 5, 6 Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 39 Modbus Address 00F9 Baud Rate Indicator 00FA Reserved 00FB Reserved 00FC Simulation Mode / Wait Mode / Reset 00FD Password for entering programming menu 00FE Password for allowing manual reset 00FF Reserved Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 40 0016 Input Reading for Zone 12 – Upper 16 bits 0017 – Lower 16 bits 0018 Input Reading for CJC – Upper 16 bits 0019 – Lower 16 bits 001A Output Status Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 41 The 16 bits to send would be: 0000 0000 0000 0101 = 0x0005 To disable the alarm from resounding, set the value to 101: The 16 bits to send would be: 0000 0000 01101 0101 = 0x0065 (101 decimal) Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 42 0x11 4-20mA Temperature, C 0x12 4-20mA Temperature, F Example: Set the input to a PF (1000 ohm platinum) RTD. The 16 bits to send would be: 0000 0000 0000 0100 = 0x0004 Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 43 High End, °C 1292 1292 PD or PE 1562 1166 E Thermocouple 1832 1000 J Thermocouple 2192 1200 K Thermocouple 2500 1370 T Thermocouple 4-20mA (All) -999 to 9999 -999 to 9999 Example: Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 44 3 represents output 3, etc. Example: Set the alarm to trip when a trip condition occurs and trip output 2 and 3: The 16 bits to send would be: 0000 0001 0000 0110 = 0x0106 Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 45 The 16 bits to send would be: 0000 0000 0000 1100 = 0x000C (12 decimal) This 16 bit word holds 2 ASCII character codes. The characters are used in the name for the input. The ASCII character code chart for characters understood by the CT224 is shown below. ASCII...
  • Page 46 This 16 bit word sets the Modbus Address for the controller. The valid range for addresses is 1 to 247. Example: Set the address to 20: The 16 bits to send would be: 0000 0000 0001 0100 = 0x0014 (20 decimal) Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 47 Then, update the settings that are to be updated. After updates have been made, send 0x0001 to the register. The CT224 will reset and clear any trips that may have been in place due to the old settings. The CT224 will monitor inputs after reset and use the new settings.
  • Page 48 This 16 bit word is used to store the password needed to Manual Reset the CT224. Valid range for inputs is from 0 to 9999. 0 is used to disable the password. Example: Set the password for entering the Configuration Menu to 1234.

  • Page 49: Specifications

    Terminal blocks at rear accept wires to AWG 12. Dimensions: 7.5” x 11.5” x 2”. Mounting: Panel mount enclosure. See cutout drawing. Weight: 3.8 lbs. UL 508, CSA C22.2 No. 14-M91 Approvals: UL File No: E252736 Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 50 This page left blank intentionally. Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 51 This page left blank intentionally. Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...
  • Page 52 Tel: (33) 5 61 03 24 01 Singapore 117674 Sensors F:\MOD\CT224\LIT\1007MN.DOC sales@minco.com Fax: (33) 5 61 03 24 09 Tel: (65) 6511 3388 Instruments Stock # 360-00099(D) 02/29/12 www.minco.com Fax: (65) 6511 3399 Minco Tel: 763.571.3121 • Fax: 763.571.0927 • www.minco.com...

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