SIMATIC PCS 7 Process Control System - Siemens

■ Overview
The following analog electronics modules can be used for connecting
actuators/sensors in the context of SIMATIC PCS 7:
Analog input modules
EM 4 AI U High Feature
• 4 inputs for voltage measurements
• Input ranges:
- ± 10 V, resolution 15 bit + sign
- ± 5 V, resolution 15 bit + sign
- 0 to 10 V, resolution 15 bit
- 1 to 5 V, resolution 15 bit
• Electrically isolated from load voltage 2L+
• Diagnostics "Short-circuit of sensor supply to M" per module
• Diagnostics "Short-circuit, open-circuit" per channel (depending
on measuring range)
• Process interrupt with limit violation on channel 0
• Permissible common-mode voltage 5 Vpp AC
EM 4 AI I High Feature
• 4 inputs for current measurements
• Input ranges:
- ± 20 mA, resolution 15 bit + sign
- 0 to 20 mA, resolution 15 bit
- 4 to 20 mA, resolution 15 bit
• Two-wire and four-wire transmitters can be connected
• Electrically isolated from load voltage 2L+
• Diagnostics "Short-circuit of sensor supply to M" per module
• Diagnostics "Short-circuit, open-circuit" per channel (depending
on measuring range)
• Process interrupt with limit violation on channel 0
• Permissible common-mode voltage 5 Vpp AC
© Siemens AG 2007
Process I/O
Dezentrale Peripherie ET 200pro
Analog electronics modules EM 144, EM 145
EM 4 AI RTD High Feature
• 4 inputs for isolated (floating) resistance measurements or
resistance thermometers with 2-, 3- and 4-wire connections
• Input ranges:
- Resistance measurement: 150 Ω; 300 Ω; 600 Ω; 3000 Ω;
resolution 15 bit
- Resistance thermometer: Pt100; Ni100; Ni120; Pt200; Ni200;
Pt500; Ni500; Pt1000; Ni1000; resolution 15 bit + sign
• Automatic compensation of line resistances with 3- and 4-wire
connections
• Parameterizable temperature coefficient with resistance-type
sensors
• Electrically isolated from load voltage supply 1L+ and 2L+
• Linearization of sensor characteristics
• Diagnostics "Open-circuit" per channel (terminals 1 and 3 are
monitored for open-circuit)
• Permissible common-mode voltage 10 Vpp AC
Analog output modules
EM 4 AO U High Feature
• 4 outputs for voltage output
• Output ranges:
- ± 10 V, resolution 15 bit + sign
- 1 to 5 V, resolution 14 bit
- 0 to 10 V, resolution 15 bit
• Electrically isolated from sensor supply voltage 1L+
• Diagnostics "Short-circuit of sensor supply to M" per module
• Diagnostics "Open-circuit in outputs" per channel
• Substitute value output
EM 4 AO I High Feature
• 4 outputs for current output
• Output ranges:
- ± 20 mA, resolution 15 bit + sign
- 4 to 20 mA, resolution 14 bit
- 0 to 20 mA, resolution 15 bit
• Electrically isolated from sensor supply voltage 1L+
• Diagnostics "Short-circuit of sensor supply to M" per module
• Diagnostics "Open-circuit" per channel
• Substitute value output
■ Technical specifications
For detailed technical specifications of the analog electronics
modules, see:
• Catalog IK PI
• Mall/CA 01 under "Distributed I/Os / ET 200pro"
Siemens ST PCS 7 · November 2007
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