Festo CMSH - Page 79

Festo — CMSH — 2021-10
Technical data
79
Analogue input AI
Current to maintain communication 3.4 mA
Current to maintain the pneumatic function 3.8 mA
Input impedance 480 Ω at 20 mA
Load voltage 9.6 V at 20 mA
Overload-proof < 65 mA
Galvanic isolation Yes, test voltage 1220 V, 1 min
Tab. 90: Electrical data
Analogue output AO
Terminals +31/-32
Functional principle of the analogue output Current source with external supply (passive
output)
Nominal signal range 4 … 20 mA
Supply voltage 24 V DC (12 V DC … 30 V DC)
Reverse-polarity protection Yes
Short-circuit proof Yes
Overload-proof Yes
Galvanic isolation Yes, test voltage 1220 V, 1 min
Tab. 91: Electrical data
Analogue input external position sensor
Terminals POS +/W/-
Functional principle of position measurement External potentiometric position sensor with a
total resistance of 3 … 80 kΩ
Maximum cable length 30 m, shielded
Tab. 92: Electrical data
Digital input DI1/DI2
Terminals DI1 +81/-82
DI2 +85/-86
Characteristics of inputs IEC 61131-2, type 3 (PLC)
Input ‘logic 0’ -3 … 5 VDC
Input ‘logic 1’ 11 … 30 VDC
Reverse-polarity protection Yes