IMPACT67-P manual
4
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1.6
1. Configuration
1.1 Power Supply
Bus modules require a direct-voltage power supply of typically 24 VDC (SELF/PELF) which
must comply with the regulations of conventional industrial power-utility companies.
In order to optimize immunity from interference, we advise you to power
sensors, bus, and actuators from different sources. The power supply should
be primary switched-mode or regulated power supplies.
The output of the power supply units is dependent on the number of connected electrical
consumers and their output.
In any case, it must be ensured that the system voltage does not drop below
18 VDC viewed from the system power supplies and measured at the
remotest slave. System response becomes unspecific if sensor and bus
power supply drops below 18 VDC.
Primary switched-mode power supply units normally permit an increase in
output voltage to the amount of the rated voltage in order to compensate for
any power losses.
Modules with digital inputs support the direct connection of commercially available sensors. A
separate power supply may be necessary for the sensors if the total power requirement is high
due to the number of slaves or the sensors have a high power draw.
Recommended
"
MCS Power"
power supply units
Primary switched-mode power supply units from the MCS Power series are specially designed
to power automation systems. For this reason, we recommended them to power the modules.
Please refer to our accessory information on page 36.
Wire Cross-Sections
The wire cross-section may be max. 1.5 mm². It is limited to this maximum cross-section by the
7/8“ connector.
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