SIEMENS
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Siemens D 31 N · March 2016
SINAMICS G120 standard inverters
0.37 kW to 250 kW (0.5 hp to 400 hp)
Control Units
5
■
Design
CU250S-2, CU250S-2 DP, CU250S-2 PN, CU250S-2 CAN
Control Units
(continued)
Terminal
No.
Signal
Features
PTC/KTY interface
14
T1 MOTOR
Positive input for motor temperature sensor
Type: PTC, KTY, bimetal
15
T2 MOTOR
Negative input for motor temperature sensor
Power supply
9
+24 V OUT
Power supply output
24 V DC, max. 200 mA
28
GND
Reference potential of the power supply/
internal electronics ground
1
+10 V OUT
Power supply output
10 V DC ±0.5 V, max. 10 mA
2
GND
Reference potential of the power supply/
internal electronics ground
31
+24 V IN
Power supply input
20.4 ... 28.8 V DC, max. 1500 mA
32
GND IN
Reference potential of the power supply input
HTL encoder/resolver interface via terminal
33
ENC+
HTL encoder power supply
79
GND
Reference potential
70
AP/S2
HTL track A+ / resolver signal A (sin+)
71
AN/S4
HTL track A- / inverted resolver signal A (sin-)
72
BP/S1
HTL track B+ / resolver signal S1
73
BN/S3
HTL track B- / inverted resolver signal B (cos-)
74
ZP
HTL zero signal+
75
ZN
HTL zero signal-
76
R1
Resolver excitation+
77
R2
Resolver excitation-
DRIVE-CLiQ
1
Transmit data +
2
Transmit data -
3
Receive data +
4
–
5
–
6
Receive data -
7
–
8
–
A
+24 V power supply
B
M, reference for power supply
Terminal
No.
Signal
Features
HTL, TTL, SSI, temperature via SUB-D interface
Terminal No.
Signal
HTL
TTL
SSI (RS422 standard)
KTY84, PTC, bimetal
1
Motor temperature sensing +
–
–
–
Temp +
2
SSI clock
–
–
Clock +
–
3
Inverse SSI clock
–
–
Clock -
–
4
5 V/24 V encoder supply
P encoder
P encoder
P encoder
–
5
5 V/24 V encoder supply
P encoder
P encoder
P encoder
–
6
Sense input, encoder supply
–
P sense
–
–
7
0 V, reference for encoder supply
M encoder
M encoder
M encoder
–
8
Motor temperature sensing -
–
–
–
Temp-
9
0 V, reference for sense input
–
M sense
–
–
10
Referencing signal
R +
R +
–
–
11
Inverted referencing signal
R -
R -
–
–
12
Inverted incremental signal B
B -
B -
–
–
13
Incremental signal B
B +
B +
–
–
14
Inverted incremental signal A / SSI data
A -
A -
Data -
–
15
Incremental signal A / SSI data
A +
A +
Data +
–
© Siemens AG 2016