BG 805 981 BE (0201) QMG422.oi
29
To prevent damage to the connectors the module to be installed must be
accurately pushed into the circuit board guides.
Firmly tighten the screws. Loose screws cause malfunctions.
DANGER
As hazardous voltages are present inside the unit empty slots must be closed off
with blanking plates (
→
65).
Never connect or detach cables while the equipment is switched on.
Never install or remove modules when the equipment is switched on. After power
off wait 10 s before you touch or move any modules.
Always tighten the screws firmly!
Before installation check the module address according to the specifications of the
individual modules.
The analog output AO 421 and the ion counter IC 421 are mounted on one board.
•
Disconnect the power cable and wait 10 sec.
•
Install/remove the QC 422 as described above
•
Remove the connector cover(s)
according to the option to be installed.
•
Install the AO/IC 421 as shown in the illustration. Install the hexagon pins
without washers and secure them with Loctite.
Bus modules
AO 421 / IC 421
Disconnect all cables
from the unit, unplug
the power cable