Siemens FM 450-1 - Page 100

Voltages, currents, potentials
• Output voltage
1L+ - 3 V
• Output current
Maximum 300 mA per count channel, short-circuit proof
• Non-periodic overvoltage
Value: 35 V
Duration: 500 ms
Recovery time: 50 s
Current consumption
• From the backplane bus 5 V DC, max.
Approx. 300 mA
• From load voltage 1L+ (no load), max.
Approx. 50 mA
• From load voltage 2L+ (no load), max.
Approx. 60 μA
Power loss of the module Approx. 6 W
Status, interrupts, diagnostics
Status display Yes, 14 green LEDs for status of CR, DIR, inputs and outputs
Interrupts
• Hardware interrupt
Yes, con󹪝gurable
• Diagnostic interrupt
Yes, con󹪝gurable
Diagnostics functions Yes
• Fault indication for internal and external faults
Yes, 2 red LEDs
• Reading diagnostics information
Yes
Data to the count signals and the digital inputs and outputs (applies to both counters)
Counter inputs 5 V (A , /A; B, /B; N, /N)
• Level
In compliance with RS 422
• Terminating resistor
approx. 220 Ohms
• Di󹪜erential input voltage
Min. 0.5 V
• Maximum count frequency
500 kHz
• Electrical isolation toward S7-400 bus
No
Counter inputs 24 V (A*, B*, N*)
• Low Level
- 30 ... + 5 V
• High level
+ 11 ... + 30 V
• Input current
Typically 9 mA
• Minimum pulse width (maximum count fre‐
quency)
≥ 2.5 µs (200 kHz)
≥ 25 µs (20 kHz)
(con󹪝gurable)
Digital inputs
• Low Level
- 28.8 ... + 5 V
• High level
+ 11 ... + 28.8 V
• Input current
Typically 9 mA
• Minimum pulse width (maximum input fre‐
quency)
≥ 2.5 µs (200 kHz)
≥ 25 µs (20 kHz)
(con󹪝gurable)
Technical Data
12.2 Technical Data
Counter module FM 450-1
100 Equipment Manual, 03/2022, A5E03648739-AC