Siemens SINAMICS G180 - C.10 Permissible Substance Values for the Cooling Water

Technical data
C.8 Technical data and identification of the PTC thermistor input at peripheral boards 2 and 4
Installation and Operating Instructions SINAMICS G180
Operating Instructions, 02/2019, 4BS0751-007
203
C.8
Technical data and identification of the PTC thermistor input at
peripheral boards 2 and 4
PTC thermistor input - Data
Application For temperature monitoring of explosion-protected motors, type of protection "In-
creased safety" EX e according to DIN EN 50019 VDE 0170/0171 and "flameproof
enclosure" Ex d according to DIN EN 50018 VDE 0170/0171 as well as normal mo-
tors outside a hazardous zone
Identification EX II (2) G [Ex d] [Ex e] [Ex n]
EX II (2) D [EX tb] [Ex tc]
maximum number of sensors
6 sensors according to DIN VDE 0660 Teil 303
OK state
< 1,5 kΩ … 1,8 kΩ
Overtemperature message
> 3,2 kΩ … 3,8 kΩ
Short-circuit in the sensor circuit
< 15 Ω … 25 Ω
Measuring circuit load
< 5 mW at R = 1,5 kΩ
Voltage in the sensor circuit
< 2 V at R = 1,5 kΩ
Current in the sensor circuit
< 1,5 mA at R = 1,5 kΩ
Voltage for measuring sensor
break
11,6 V
Current for short-circuited sensor
circuit
1,45 mA
Response time
≤ 75 ms
Electrical design Protective separation for 690 V to the other circuits according to EN 50178,
EN 61800-5-1
Maximum cable length for PTC thermistor sensor circuit:
Cross-section 2.5 mm² 2 × 500 m
Cross-section 1.5 mm² 2 × 300 m
Cross-section 0.5 mm² 2 × 100 m
The PTC input can be used for monitoring motors in hazardous zones. It is not permissible
that the converter itself is installed in a hazardous zone.
The PTC thermistor evaluation function can be deactivated by an internal switch. For this
reason, carry out the test described in section "Testing the PTC thermistor shutdown
function" (Page 47). If the result of the test is negative, contact the Service Center for advice.