![background image](http://html.mh-extra.com/html/emerson/bettis-q-series/bettis-q-series_installation-manual_101552005.webp)
5
Installation Guide
Bettis Q-Series
DOC.IG.BQC44.1 Rev. 1
February 2017
4 Electric Connections
The QC44 Intrinsically Safe Control Module contains
a pilot valve for controlling the actuator and
switches for position feedback.
WARNING:
* If the Control Module is used in a manner not
specified by the manufacturer, the protection
provided by the equipment may be impaired.
* If required, mount earth wire (1) between top
(2) and stainless steel washer (3) of earth wire
connection (see figure 4.2).
* Use and mount cable glands as required by
national or local legislation.
* If IP66 or NEMA 4X ingress protection is
required, then the electrical entries must be
fitted with devices rated IP66 or NEMA 4X.
Electrical safety requirements:
Use
In- and outdoor.
Altitude
Operating full power available
up to 2000 meter (6000 feet).
Maximum rela-
tive humidity
80% for temperatures up to 31°C
(87.8°F) decreasing linearly to
50% relative humidity at 40°C
(104°F).
Mains supply
fluctuation
up to ±10% of nominal voltage
Over voltage
category
II
Pollution degree
2 (3 when the cover remains
closed)
Temperature
see table 4.1
Control Module
Type Label
Terminals
Pilot valve
terminals
Switch terminals
Option: Manual
control
Fig. 4.1 Terminal connections behind cover.
Fig. 4.2 Earth wire connection
Lockable
Module cover
Option: Additional
manual control for
“Fail in Last Position”
Electrical entries:
3/4”NPT
or M20
1/2”NPT
or M20
Caution! :
Risk of electric shock
* Installation, adjustment, putting into service,
use, assembly, disassembly and maintenance
of the control module is strictly reserved to
qualified personnel.
* Do not attempt to install or repair any electric
device without shutting off incoming power.