Analog Electronic Modules
12-88
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Use of PTC resistances
PTCs are suitable for temperature monitoring or as a thermal protective device for
complex drives and transformer windings.
•
Select ”Resistance 2-wire” and ”PTC” during configuration.
•
Connect the PTC in 2-wire technology.
•
Use PTC resistances of Type A (PTC thermistor) as per
DIN / VDE 0660, Part 302.
•
Sensor data for PTC resistance:
Feature
Technical
specifications
Remarks
Switching points
Switch on/release
max. 750
Ω
Measured resistance < Response value
•
SIMATIC S7: Bit 0 = ”0” (in PII)
•
SIMATIC S5: Bit 3 = ”0” (in PII)
Powering-down
from 1650
Ω
to 4000
Ω
Temperature rise
Measured resistance > Response value
•
SIMATIC S7: Bit 0 = ”1” (in PII)
•
SIMATIC S5: Bit 3 = ”1” (in PII)
Switch on/release
from 1650
Ω
to 750
Ω
Temperature fall
Measured resistance < Response value
•
SIMATIC S7: Bit 0 = ”0” (in PII)
•
SIMATIC S5: Bit 3 = ”0” (in PII)
(TNF--5)
_
C
(TNF+5)
_
C
(TNF+15)
_
C
Measuring circuit
voltage
Voltage at PTC
max. 550
Ω
Min. 1330
Ω
Min. 4000
Ω
Max. 7.5 V
TNF = rated response temperature
Содержание SIMATIC ET 200S
Страница 42: ...Product Overview 1 16 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 64: ...Brief Instructions on Commissioning ET 200S 2 22 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 112: ...Configuration Options 3 48 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 232: ...Commissioning and Diagnostics 6 72 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 244: ...General Technical Specifications 7 12 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 274: ...Interface Modules 8 30 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 538: ...4 IQ SENSE 13 18 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 564: ...Address Space of the Input and Outputs of the ET 200S C 4 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 574: ...Response Times D 10 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 580: ...Special Measures for Interference Free Operation F 4 ET 200S Distributed I O System EWA 4NEB 780602402 12 ...
Страница 600: ...Product Information on the Use of subassemblies modules in a Zone 2 Hazardous Area 2 A5E00352937 02 ...