Precision Digital PD650 - Manual (Page 20)

Model PD650 Large Display Process Meter Instruction Manual
20
Power Selection
Overview
Power Selection involves the following:
1. Changing to 230 VAC power if needed. Factory default is 115 VAC.
2. Labeling the meter as to how it will be powered: 115 VAC, 230 VAC, or
24 VDC. Meters powered from 24 VDC are labeled as such at the factory.
Note: Meters ordered to operate from 24 VDC do not require any special setup,
this option is not field selectable.
!
All AC powered meters are shipped from the factory set for
115 VAC power. Do not apply 230 VAC without first setting up the
meter to accept this voltage.
!
Disconnect power prior to performing the following procedures.
The meter is field selectable for either 115 VAC or 230 VAC power.
Changing the voltage selection involves the removal of the front
cover and the Display Board, then selecting 115V or 230V on
switch S1 located on the Main Board.
!
Observe polarity for DC powered meters. Applying voltage with
reverse polarity may damage the meter.
Do not apply an AC voltage to DC powered meters. Applying an
AC voltage to DC powered meters will result in damage to the
meter and endanger personnel.
Changing from 115 to 230 VAC Power
To access the 115/230 VAC switch it is necessary to remove the housing cover
and the Display Board, see Disassembling the Meter, page 18.
Once the Display Board has been removed, switch S1 is visible
.
It is the large
black component with a red slide switch on the top, located next to the
transformer. For location see Figure 3, page 21.
For 115 VAC operation, the switch shows 115V; for 230 VAC it shows 230V.
Several setup steps are required and connections made while the Display Board is
removed, so it should not be reinstalled just yet. However, to avoid electric shock,
install the Display Board prior to applying power.
Labeling Meter for 115 VAC, 230 VAC, or 24 VDC
Figure 2. Input Power Label
A label on top of the unit
contains a place for the
user to indicate if the unit is
powered from 115 or 230
VAC. The user should mark
the appropriate box once
the desired power has been
selected on switch S1.
CAUTION
ALL AC POWERED UNITS ARE
SHIPPED FROM THE FACTORY
SET FOR 115 VAC
115 VAC
230 VAC
24 VDC
(SEE INSTRUCTION MANUAL TO CHANGE VOLTAGE SELECTION)