Power Supply And Protection - Honeywell GasLab Q2 Manual

5.4.1. Power supply and protection

The 24 V (DC) power supply must have reinforced insulation to isolate it from other
networks. Only one device may be operated on each power supply unit. The overvoltage
/overcurrent and electrical cable protection must be provided by the power supply unit.
L'alimentation électrique de 24 V (CC) doit être isolée de manière renforcée des autres
réseaux. Un seul appareil doit être branché sur une alimentation électrique. L'alimentation
en énergie doit garantir la protection contre la surtension/surintensité et la protection de
la ligne électrique.
GasLab Q2 does not have any protective devices which can be replaced by the user.
Check the voltage used at the place of use to ensure it is correct and suitable as described in the
following data:
Power supply
(see also section 2.7)
* Note:
The shut-down current is 200/Supply voltage. The tripping properties depend on the ambient temperature. This
must be taken into account if the temperature is significantly higher than room temperature.
A maximum rated operating current of 4 A should be considered for the power supply (also consider
the voltage drop on the cables). Ensure that the power supply is capable of tripping the external
circuit breakers or the internal 4 A fuse in the event of a short-circuit.
Information for general use
Rev. M / 73023639
GASLAB Q2 AFTER DELIVERY AND AT THE PLACE OF USE
The internal thermal and electrical fuses cannot be reset.
Please contact Honeywell if this protective device has tripped.
See also 9 Possible malfunctions and troubleshooting
Voltage range: 24 V DC. Fluctuations, including mains fluctuations ±
15%
An external safety device which shuts down within 120 seconds* is
installed
A rating of up to 96 W nominal power can be supplied.
65 GasLab Q2