⎯
71
⎯
6 F 2 S 0 8 4 6
The alarming and tripping can be disabled by the scheme switches [THMAL] and [THMT]
respectively or binary input signals THMA_BLOCK and THM_BLOCK.
&
THM_ALARM
+
"ON"
[THMAL]
+
"ON"
[THMT]
THM_TRIP
&
T
A
THM
1
THMA_BLOCK
1615
1
THM_BLOCK
1631
560
556
690
691
Figure 2.4.6.2 Thermal Overload Protection Scheme Logic
Setting
The table below shows the setting elements necessary for the thermal overload protection and their
setting ranges.
Element Range
Step
Default Remarks
THM
2.0 – 10.0 A
(0.40 – 2.00 A)(*)
0.1 A
(0.01 A)
5.0 A
(1.00 A)
Thermal overload setting.
(THM = I
AOL
: allowable overload current)
THMIP
0.0 – 5.0 A
(0.00 – 1.00 A)(*)
0.1 A
(0.01 A)
0.0 A
(0.00 A)
Previous load current
TTHM
0.5 - 300.0 min
0.1 min
10.0 min
Thermal time constant
THMA
50 – 99 %
1 %
80 %
Thermal alarm setting. (Percentage of THM setting.)
[THMT]
Off / On
Off
Thermal OL enable
[THMAL]
Off / On
Off
Thermal alarm enable
(*) Current values shown in the parenthesis are in the case of a 1 A rating. Other current
values are in the case of a 5 A rating.
Note: THMIP sets a minimum level of previous load current to be used by the thermal
element, and is only active when testing ([THMRST] = “ON”).
Содержание GRZ100 B Series
Страница 264: ... 263 6 F 2 S 0 8 4 6 Appendix A Block Diagram ...
Страница 271: ... 270 6 F 2 S 0 8 4 6 ...
Страница 272: ... 271 6 F 2 S 0 8 4 6 Appendix B Signal List ...
Страница 307: ... 306 6 F 2 S 0 8 4 6 ...
Страница 308: ... 307 6 F 2 S 0 8 4 6 Appendix C Variable Timer List ...
Страница 310: ... 309 6 F 2 S 0 8 4 6 Appendix D Binary Input Output Default Setting List ...
Страница 321: ... 320 6 F 2 S 0 8 4 6 ...
Страница 322: ... 321 6 F 2 S 0 8 4 6 Appendix E Details of Relay Menu and LCD Button Operation ...
Страница 331: ... 330 6 F 2 S 0 8 4 6 ...
Страница 340: ... 339 6 F 2 S 0 8 4 6 Appendix G Typical External Connections ...
Страница 377: ... 376 6 F 2 S 0 8 4 6 ...
Страница 384: ... 383 6 F 2 S 0 8 4 6 Appendix J Return Repair Form ...
Страница 388: ... 387 6 F 2 S 0 8 4 6 Customer Name Company Name Address Telephone No Facsimile No Signature ...
Страница 389: ... 388 6 F 2 S 0 8 4 6 ...
Страница 390: ... 389 6 F 2 S 0 8 4 6 Appendix K Technical Data ...
Страница 401: ... 400 6 F 2 S 0 8 4 6 ...
Страница 402: ... 401 6 F 2 S 0 8 4 6 Appendix L Symbols Used in Scheme Logic ...
Страница 405: ... 404 6 F 2 S 0 8 4 6 ...
Страница 406: ... 405 6 F 2 S 0 8 4 6 Appendix M Example of Setting Calculation ...
Страница 417: ... 416 6 F 2 S 0 8 4 6 ...
Страница 418: ... 417 6 F 2 S 0 8 4 6 Appendix N IEC60870 5 103 Interoperability and Troubleshooting ...
Страница 430: ... 429 6 F 2 S 0 8 4 6 Appendix O Programmable Reset Characteristics and Implementation of Thermal Model to IEC60255 8 ...
Страница 434: ... 433 6 F 2 S 0 8 4 6 Appendix P Inverse Time Characteristics ...
Страница 437: ... 436 6 F 2 S 0 8 4 6 ...
Страница 438: ... 437 6 F 2 S 0 8 4 6 Appendix Q Failed Module Tracing and Replacement ...
Страница 444: ... 443 6 F 2 S 0 8 4 6 Appendix R Ordering ...
Страница 447: ......