Characteristics of the auxiliary inputs of the TSX CCY 1128
(Original Document)
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Table of the auxiliary inputs characteristics
The following table gives the characteristics of the IREC, ICAPT1 and ICAPT2 auxiliary inputs.
Parameter designation
Symbols
Values
Units
Nominal values
Voltage
Un
24
V
Current
In
8
mA
Sensor supply, ripple included
U1
Utime (1)
19...30
34
V
Thresholds
In state 1
Voltage
Uon
> 11
V
Current at Uon
Ion
> 3
mA
In state 0
Voltage
Uoff
< 5
V
Current
Ioff
< 1,5
mA
Response time
State 0 to 1
Ton
< 100
ms
State 1 to 0
Toff
< 100
ms
Sensor voltage check threshold
OK
Uok
> 18
V
Fault
Udef
< 14
V
Input impedance
Re
3
kOhms
Type of input
Resistive
Logic type
Positive (sink)
IEC 1131 compatibility with sensors
Type 1
3-wire/2-wire proximity sensor compatibility
  • 3-wire proximity sensor: all 3-wire proximity sensors operating at 24 VDC
  • 2-wire proximity sensor: all 2-wire proximity sensors operating at 24 VDC have the following characteristics:
Breakdown voltage when closed: < 7V
Minimum switched current: < 2.5 mA
Residual current when open: < 1.5 mA
Dielectric rigidity with the ground connection
1500 V eff 50/60 Hz per mn
(1) Utime: maximum permitted voltage for 1 hour in every 24.