Toho-electronics TTM200 Bedienungsanleitung Seite 110
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48-7009-E 5-40
5.4.7 Current transformer (CT) abnormality function
■ What CT (current transformer) is
• CT is a function to detect that outputs are not properly turned on and off due to failure of relays or
SSRs.
• For detection of failure, using CT, ensure to wire the CT terminal and output terminal (such as heater
power supply), set the CT * target connection setting (CI *) and CT 1 abnormality current value
setting (Ct 1), and establish the control effective.
State of control output 1
Power distribution to heater
CT abnormality
state
Output *
Operation lamp
ON
Lighting
Existent *1)
Normal
Nonexistent (output disconnection state)
Abnormal
OFF
Extinction
Existent (output short state)
Abnormal
Nonexistent *2)
Normal
ON
Control output 1
Ton *3)
Toff *4)
OFF
*1) Power distribution existent (normal) is determined when the CT 1 abnormal current value setting
is larger than the CT current value in the period Ton.
*2) Power distribution nonexistent (normal) is determined when the CT 1 abnormal current value
setting is smaller than the CT current value in the period Toff.
*3) State of the output disconnection is not detected when the ON time (Ton) of the control output 1 is
300 ms or smaller.
*4) State of the output short is not detected when the OFF time (Toff) of the control output 1 is 300 ms
or smaller.
* Detection is unstable when the CT current value is small. To solve the issue, wind CT with load
wires passing through the hole multiple times as illustrated below. Winding twice results in the
detection current being larger by a multiplication factor of 2.
Note The detection accuracy is, however, deteriorated by a multiplication factor of 2.
ＣＴ
■ Example of installation, setting calculation and parameter setting of CT
■ Single phase
Install CT in the location illustrated below.
AC line
To equipment
CT input
Load
Load: heater and such
Note Wire in one way in any direction.
Load wire
- User’s Manual 1
- ★ Precautions on safety 2
- ★ Alarm symbols 2
- ★ Other symbols 2
- Warnings 3
- Cautions 3
- ★ Summary notation 4
- ★ Notation of characters 4
- Contents 5
- 6. Parameters 6
- 7. Appendix 6
- 1. Overview 7
- 1.1 Feature 8
- TTM20 9
- ■ Front panel 10
- ■ Key operations 12
- ■ Others 12
- ■ Input section 14
- ■ Output section 15
- ■ Communication function 16
- 1.6 Basic flow of setting 17
- 2. Installation 18
- Panel cutting dimensions 21
- (9 6× n - 3 ) 22
- 3. Wiring 23
- 3.1 Precautions on wiring 24
- 3.2 Terminal arrangement 25
- DI 1 input 28
- DI 2 input 28
- DI 3 input 28
- DI 4 input 28
- 3.3 Wiring to each terminal 29
- TTM-205/209 30
- TTM-207 30
- 48-7009-E 3-13 35
- 3-4 Examples of wiring 37
- ★ Configuration example 38
- ★ Connection configuration 38
- 4. Basic operation 42
- 4.1 Flow of setting mode 43
- ■ Initial screen 44
- 4.2 Basic operation 45
- 48-7009-E 4-5 46
- 48-7009-E 4-6 47
- 48-7009-E 4-7 48
- 48-7009-E 4-8 49
- 48-7009-E 4-9 50
- 48-7009-E 4-10 51
- 48-7009-E 4-11 52
- 48-7009-E 4-12 53
- 48-7009-E 4-13 54
- 48-7009-E 4-14 55
- 48-7009-E 4-15 56
- 48-7009-E 4-16 57
- 48-7009-E 4-17 58
- 48-7009-E 4-18 59
- 48-7009-E 4-19 60
- 48-7009-E 4-21 62
- 48-7009-E 4-22 63
- 4.2.7 How to set outputs 66
- 48-7009-E 4-26 67
- 48-7009-E 4-27 68
- 5. Operating the equipment 71
- 5.3 How to set run settings 74
- 48-7009-E 5-5 75
- 48-7009-E 5-6 76
- 5.3.3 PID control setting 79
- 48-7009-E 5-10 80
- 48-7009-E 5-12 82
- 48-7009-E 5-14 84
- 5.3.5 Indicator setting 85
- 48-7009-E 5-16 86
- 48-7009-E 5-17 87
- 5.3.7 Event setting 88
- 48-7009-E 5-19 89
- 5.3.8 How to set MD/READY 90
- 48-7009-E 5-21 91
- 5.4.2 Self-tuning function 95
- 5.4.3 Mode/manual function 97
- 5.4.4 Bank function 98
- 5.4.5 Timer function 101
- AC line 110
- To equipment 110
- CT input 110
- Load: heater and such 110
- [When normal] 112
- Temperature 115
- MAX. 16 PARAMETER 117
- 16ﾊﾟﾗﾒｰﾀ 117
- SET21 PGF 122
- 48-7009-E 5-55 125
- 48-7009-E 5-60 130
- Wait range 131
- Example for StEPN 3 134
- SV value 135
- 48-7009-E 5-69 139
- Zone threshold setting 140
- Magnified 142
- SET23 ZBNK 143
- Max. 16 parameters 146
- 6. Explanation on parameters 149
- 6.1 Input 1 type setting 150
- 48-7009-E 6-12 160
- 48-7009-E 6-15 163
- 48-7009-E 6-18 166
- Proportional 167
- Deviation 168
- Setting value 168
- Proportional cycle 169
- 48-7009-E 6-31 179
- <Forward operation> 179
- 3 203
- Abnormality 206
- 6.7 DI setting 207
- 6.8 Timer function setting 210
- 6.10 Initial setting 215
- Ｔ Ｔ Ｍ－２ ０ ４ 220
- 48-7009-E 6-74 222
- 0～999（0．0～999．9）（℃） 222
- 48-7009-E 6-75 223
- ■Time Setting 223
- 6.14 PROGRAM SETTING 225
- 48-7009-E 6-78 226
- Threshold 228
- 7. Appendix 232
- 7.1 Product specifications 233
- 48-7009-E 7-3 234
- 48-7009-E 7-4 235
- 48-7009-E 7-5 236
- 48-7009-E 7-6 237
- 48-7009-E 7-7 238
- TTM-204 238
- TTM-205, 207 and 209 238
- 48-7009-E 7-8 239
- 7.2 Accessories 240
- 7.4 Troubleshooting 242
- 48-7009-E 7-12 243
- 7.5 Setting list 244
- 48-7009-E 7-14 245
- 48-7009-E 7-15 246
- 48-7009-E 7-16 247
- 48-7009-E 7-17 248
- 48-7009-E 7-18 249
- 48-7009-E 7-19 250
- 48-7009-E 7-20 251
- 48-7009-E 7-21 252
- 48-7009-E 7-22 253
- 48-7009-E 7-23 254
- 48-7009-E 7-24 255
- 48-7009-E 7-25 256
- 48-7009-E 7-26 257
- 48-7009-E 7-27 258
- 48-7009-E 7-28 259
- 48-7009-E 7-29 260
- 48-7009-E 7-30 261
- 48-7009-E 7-31 262
- 48-7009-E 7-32 263
- 48-7009-E 7-33 264
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