Technical Specifications
A-18
C7-635 Control System
A5E00155581-04
Analog inputs
Number
Number of inputs
• Current / voltage input
• Resistance input
4 channels
1 channel
Cable length
• Shielded Maximum 100 m (109 yd.)
Voltage, Currents, Potentials
Resistance input
• No-load voltage 2.5 V, typically
• Measured current 1.8 mA to 3.3 mA, typically
Galvanic isolation
• Between channels and I/O
bus
Yes
• Between channels No
Permissible potential difference
• Between inputs and MANA
(VCM)
8.0 VDC
• Between MANA and Minternal
(VISO)
75 VDC/60 VAC
Insulation tested at 500 VDC
Analog Value Generation
Measuring principle Momentary value encoding
(successive approximation)
Integration time/conversion time/tesolution (per channel)
• Configurable Yes
• Integration time in ms 2.5 / 16.6 / 20
• Permissible input frequency Maximum 400 Hz
• Resolution (including
overdrive)
11 bits + sign bit
• Suppression of interference
frequency f1
400 / 60 / 50 Hz
Time constant of the input filter 0.38 ms
Basic execution time 1 ms
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