Power Supply And Electric Protection - Honeywell enCore Series Manual

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The device is protected against polarity reversal. The device will not work
if the connections have been reversed.
5.6.1

Power supply and electric protection

The power supply must comply with section
(p. 33). Note the following in this context:
The 24 V (DC) power supply must have reinforced insulation and be safely isol-
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ated from other mains. Fluctuations, including mains fluctuations: ± 15%.It
must be possible to supply a rating of up to 96 W. Generated e.g. with Quint-
PS-100-240AC / Quint-PS24DC / 24DC / 10 / Siemens PSU / Siemens logo
or equivalent power supplies
Only one device may be operated at a voltage supply.
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The overvoltage/current protection and electrical line protection must be en-
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sured by the power supply. Suitable external safety devices must shut down a
current of 8.3 A or over within 120 seconds, thus limiting the power supply.
The device has no user replaceable guards, it will not work if the
internal protective equipment has tripped.
This protective equipment (thermal trips and electrical fuses) must be
changed by authorized specialists.
If the internal guards have tripped, refer to
9.4 Correct electrical faults
➪
or contact
12.1 Technical support Flow Computers and Gas analyzers
➪
(p. 293)
Check the input voltage, at the location of use, for accuracy and usability according
to the following data:
Voltage range: 24 V DC. Including mains fluctuations ± 15%, Power supply
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units with safe electrical isolation.
An external safety device which shuts down within 120 seconds is installed.
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(The shut-down current is 200/Supply voltage. The tripping properties depend
on the ambient temperature. This must be taken into account if the temper-
ature is significantly higher than room temperature.)
Rating of up to 96 W can be supplied.
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GasLab Q2
GasLab Q2 after delivery and at the place of use
2.7 Electrical safety information
➪
(p. 253)
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