Siemens CU240B-2 - 10 Technical Data; Technical Data, CU240 B-2 Control Unit

Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
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Technical data
10
10.1
Technical data, CU240B-2 Control Unit
Feature
Data
Fieldbus interface CU240B-2 With RS485 interface for the
following protocols:
• USS
• Modbus RTU
Article numbers:
Overview of Control Units
(Page 29)
CU240B-2 DP With PROFIBUS interface
Operating voltage You have two options for the Control Unit power supply:
• Supply from the Power Module
• External supply via terminals 31 and 32 with 20.4 … 28.8 VDC.
Use a power supply with protective extra low voltage (PELV according to EN 61800-5-1),
Class 2.
The 0 V of the power supply must be connected to the PE of the plant/system through a
low-ohmic connection.
The power supply is electrically isolated from the control terminals.
Current consumption max 0.5 A
Power loss
5.0 W
Plus power loss of the output voltages.
Output voltages
+24 V out (terminal 9),18 V … 28.8 V, max. 100 mA
+10 V out (terminals 1 and 35), 9.5 V … 10.5 V, max. 10 mA
Setpoint resolution
0.01 Hz
Digital inputs 4 (DI 0 … DI 3)
• Low < 5 V, high > 11 V
• Electrically isolated
• 30 V maximum input voltage
• 5.5 mA current consumption
• SIMATIC-compatible
• PNP/NPN switchable
• 10 ms response time for debounce time p0724 = 0.
Analog input 1 (AI 0)
• Differential input
• 12-bit resolution
• 13 ms ± 1 ms response time
• Switchable:
– 0 V … 10 V or -10 V … +10 V (voltage < 35 V)
– 0 mA … 20 mA (120 Ω input resistance, voltage < 10 V, cur-
rent < 80 mA)
• If AI 0 has been configured as additional digital input: Voltage
< 35 V, low < 1.6 V, high > 4.0 V, 13 ms ± 1 ms response time for
debounce time p0724 = 0.