Siemens ST PCS 7 User Manual

Dezentrale Peripherie ET 200pro

Siemens ST PCS 7 · November 2007

11

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The following analog electronics modules can be used for con-

necting actuators/sensors in the context of SIMATIC PCS 7:

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 (depend-

ing 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 (depend-

ing on measuring range)

• Process interrupt with limit violation on channel 0
• Permissible common-mode voltage 5 Vpp AC

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

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

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For detailed technical specifications of the analog electronics 

modules, see: 
• Catalog IK PI
• Mall/CA 01 under "Distributed I/Os / ET 200pro"

© Siemens AG 2007