Toshiba AD268 68

68 Analog I/O Modules (AD268 / DA264 / TC218)

4. Wiring PART 3 TC218

External 24Vdc power supply

4.3 Wiring precau tions

(1) The thermocouple signal is weak voltage. Pay attention to prevent noise interference.

• Shortest cable distance

• Cable shield and grounding

• Separation from other cables

(2) This module requires 24Vdc power. Apply the 24Vdc power before (or at the same time)

applying T2’s main power. Otherwise, this module detects the external 24Vdc error.

(3) If the external 24Vdc power for this module is not stable, the converted data will not be

stable. In this case, use a dedicated 24Vdc power supply for this module.

(4) It is recommended to short the unused channels. Because if it is open, meaningless A/D

conversion data will appear.

(5) If the converted data is not stable owing to electrical noise, it is recommended to use the

input averaging function to reduce the noise interference. For the averaging function, refer

to section 6.

(6) When this module is used for thermocouple input, connect the thermistor to channel 1

(CH1). The thermistor is attached with this module.

P24

COM

Internal circuit

Normall y connect LG and FG,

then connect to ground. (a)

However, depending on the

condition, connect grounding

individually by opening LG and

FG. (b)

TC218

LG

FG

+

-

24Vdc ±10%

(b) (a)

DC/DC

converter

+15V

-15V AG

CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net

Contents

Main Important Information Safety Precautions Safety Symbols ! ! Safety Precautions 2 About This Manual About This Manual Related Manual Table of Contents Part 1 8 Channel Analog Input Module AD268 4 Part 2 4 Channel Analog Output Module DA264 Part 3 8 Channel Thermocouple Input Module TC218 Page Page 8 1. Introduction 1.1 AD268 Functions Page 10 2. Specifications Users Manual 11 12 3. Input Type Setting 3. Input Type Setting 3.1 Jumper plug setting 1 3 3.2 Parameter setting by software 14 4. Wiring AD268 terminal block Users Manual 15 Voltage input External 24Vdc power supply Current input 16 4. Wiring Page 18 5.2 A/D conversion data Users Manual 19 5V range: 0 D = 3200 A 20 0 to 10V range: D = 3200 A Page 22 1 to 5V / 4 to 20mA range: 4 to 20mA range: D = 800 A - 3200 1 to 5V range: D = 3200 A - 3200 Page 24 6. Parameters The contents of the AD268's buffer memory are as follows. Users Manual 25 26 Page 28 Page 30 6.2 Parameter setting procedure 6.3 Sample program for se tting the parameters 32 7. Troubleshooting Users Manual 33 Page Page 36 1. Introduction 1.1 DA264 Functions Page 38 2. Specifications Users Manual 39 40 3. Output Type Setting 3. Output Type Setting 3.1 Parameter setting by software Users Manual 41 DA264 terminal block 42 4. Wiring External 24Vdc power supply Voltage output Current output Page 44 5.2 D/A conversion data 46 5V range: Users Manual 47 0 to 10V range: 48 0 to 5V / 0 to 20mA range: 0 to 20mA range: A = 1.25 D 0 to 5V range: Users Manual 49 1 to 5V / 4 to 20mA range: 4 to 20mA range: A = 1.25 D + 4000 1 to 5V range: A = 0.3125 D + 1000 50 Page 52 6. Parameters Page 54 6. Parameters 6.2 Sample program to access the parameters 56 7. Troubleshooting Page Page Page 60 1. Introduction 1.1 TC218 Functions Page 62 2. Specifications Users Manual 63 64 3. Input Type Setting 3. Input Type Setting 3.1 Jumper plug setting 1 3 3.2 Parameter setting by software 66 4. Wiring TC218 terminal block Users Manual 67 100mV input (CH1 to CH8) Thermocouple input CH1 CH2 to CH8 Connect the thermistor attached to the TC218 68 4. Wiring Page 70 5.2 A/D conversion data Users Manual 71 Thermocouple (type K) input: 72 Thermocouple (type J) input: Users Manual 73 Thermocouple (type E) input: 74 Users Manual 75 The contents of the TC218's buffer memory are as follows. 76 Page 78 Page 80 6.2 Parameter setting procedure 82 6.3 Sample program for se tting the parameters Page 84 7. Troubleshooting