SIEMENS
5/22
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
CU240B-2 and CU240B-2 DP Control Units
CU240B-2 Control Unit with open and closed terminal covers
Terminal
No.
Signal
Features
Digital inputs (DI)
5 ... 8
DI0 ... DI3
Freely programmable (isolated) 5.5 mA/24 V
69
DI COM
Reference potential for digital inputs
Digital output (DO)
18
DO0, NC
Relay output DO0
NC contact (0.5 A, 30 V DC)
19
DO0, NO
Relay output DO0
NO contact (0.5 A, 30 V DC)
20
DO0, COM
Relay output DO0
Common contact (0.5 A, 30 V DC)
Analog input (AI)
3
AI0+
Differential input, switchable between current,
voltage
Value range: 0 ... 10 V, -10 ... +10 V,
0/2 ... 10 V, 0/4 ... 20 mA
4
AI0-
Analog output (AO)
12
AO0+
Non-isolated output
Freely programmable
Value range: 0 ... 10 V; 0/4 ... 20 mA
13
GND
Reference potential of the AO0/
internal electronics ground
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. 100 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
Terminal
No.
Signal
Features
© Siemens AG 2016