Siemens FM 450-1 - Module Status after Power Is Switched on

Wiring steps
Proceed as follows when wiring the front connector:
WARNING
Injury to persons can occur.
If you wire the FM 450-1 front connector when the power is switched on, you may injure
yourself owing to an electric shock.
Always switch o󹪜 power before you wire the FM 450-1!
1. Pull the cover o󹪜 the front connector.
2. Insulate the cables (length 6 mm).
3. Do you use wire end ferrules?
If so: Press-󹪝t the wire end ferrules with the the conductors.
4. Load the enclosed strain relief clamp into the front connector
5. Start wiring from the bottom. If you have a front connector with screw-type contacts also
screw unassigned terminals (torque 0.6 to 0.8 Nm).
6. Tighten the strain relief for the cable chain.
7. Close the front connector.
8. Label the terminals on the enclosed labeling strip.
A detailed description of the wiring of a front connector is to be found in manual /1/.
4.4 Module status after power is switched on
Characteristics
After the power supply has been switched on and before any data have been transmitted, the
module status is as follows:
• Counter inputs with default setting for 5 V di󹪜erential signals, track B not inverted; single
evaluation (refer to the section "Signal evaluation (Page 83)")
• 0 to +32 bit counting range
• Counter status zero
• Counter setting with digital input 1I2 or 2I2 (and zero mark) disabled
• Input delay for the digital inputs: typically 1 μs
(max. frequency: 200 kHz, minimum pulse width: 2.5 μs)
• Input delay for 24-V count inputs: typically 1 μs
(max. frequency: 200 kHz, minimum pulse width: 2.5 μs)
• Outputs 1Q0 and 1Q1 or 2Q0 and 2Q1 switched o󹪜
• Pulse duration = 0
Wiring
4.4 Module status after power is switched on
Counter module FM 450-1
34 Equipment Manual, 03/2022, A5E03648739-AC