Chapter: 4. Installation
Select a position to provide free view of the panel as well as easy access during operation and service. The
operator unit may be mounted ush (optional brackets are needed) in a panel, desktop mounted or directly
mounted onto a bulkhead. Fig. 4.3 shows the operator unit along with the main installation dimensions. If
the unit is to be ush mounted, the shown cut-out and recession depth dimensions must be observed. For
details, see “Fig. 4.3. Operator Unit.” on page 38.
Remember to leave room in front of the unit to open the door a full 90 degrees.
Do not perform installation work with system power applied!!
Cables are led through the appropriate cable glands as follows:
• The cable from the transducer(s) should normally occupy the left gland.
• The right gland is used for power supply connection.
• The centre ones are used for any interface signals connected.
Power supply may be either 115/230 V AC or 24 V DC. Power consumption is app. 50 W at 24 V, app. 70W
at 115/230 V.
The transducer is always connected with 1 pair plus screen. See “Interfacing” on page 45.
115/230 V Selection
If the AC power system is 115 V, GDS101 may be prepared for 115 V AC by re-connecting the connectors
J102, J103 as shown in “Fig. 4.4. Voltage selection connectors and fuses, terminal board.” on page 40.
This diagram also shows position of fuses for 115/230 V AC and 24 V DC. These fuses are normal 5 x 20
mm glass fuses.
AC supply: FS100, FS101 230 V 0.5 A slow blow.
115 V 1 A slow blow.
DC supply: FS102 24 V 3.15 A slow blow.
When the installation is complete, and power is connected to the operator unit, the appropriate power switch
by the power terminals is switched on. For daily operation, these switches may stay on and the unit is
switched off by pressing the “SYSTEM off” button on “Fig. 2.3. Screen 2, 2nd Operation screen.” on page 14.
The unit is switched on by pressing any button.
Both 115/230 V AC and 24 V DC power may be connected and switched on at the same time. If one of these
supplies shuts down, changeover is automatic.
EMC
Important note: To meet the stringent EMC requirements for this type of equipment, two ferrite lters are
supplied with the display unit. The transducer wires should be looped two times through these as shown in
”Fig. 9.4 EMC Mounting Kit” on page 65.
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