CR720S CR721S
20
ifm electronic gmbh ● Friedrichstraße 1 ● 45128 Essen We reserve the right to make technical alterations without prior notice!
26/11/2020
CR720S / page 5
CR720S (HW version: V1.0.5.x)
ST A and ST B / input characteristics
Control systems
ST A:
IN0100...0103
IN0200...0203
IN0600...0603
IN0700...0703
ST B:
IN1100...1103
IN1600...1603
Resolution
12 bits
Input frequency
< 330 Hz
Measuring ranges
0...10 V, 0...32 V, 0...20 mA, ratiometric,
binary low side
Range diagnostics
configurable minimum and maximum values
for the measuring range to detect short circuit
to VBB and short circuit to GND / wire break
Multifunction inputs analogue /
digital
(IN MULTIFUNCTION-A)
Current input 0 … 20 mA (A)
Input resistance
298 Ω
Range diagnostics min./max.
0 mA / 20 mA (default)
Accuracy
± 1.5 % FS
Voltage input 0...10 V (A)
Input resistance
67.6 kΩ
Range diagnostics min./max.
0 V / 10 V (default)
Accuracy
± 1 % FS
Voltage input 0...32 V (A)
Input resistance
51.0 kΩ
Range diagnostics min./max.
0 V / 32 V (default)
Accuracy
± 1 % FS
Voltage input ratiometric (A)
Input resistance
51.0 kΩ
Range diagnostics min./max.
0 ‰ / 1000 ‰ (default)
Accuracy
± 1 % FS
Digital input (B
L
)
(default)
Input resistance
9.5 kΩ
Switch-on level
> 0.7 VBB
30
Switch-off level
< 0.3 VBB
30
Range diagnostics min./max.
1 V / 0.95 VBB
30
(default)
Accuracy
± 1 % FS
