4
3.1 Electrical Operation
Check that the power supply voltage
agrees with that on the actuator
nameplate. Switch on power supply. It
is necessary to check phase rotation (on
3-phase units). Proper lead connections
can be verified by viewing the pump/
motor fan while in operation. It should
rotate clockwise. If rotation is anti-
clockwise, reverse leads.
WARNING:
Do not operate the
actuator electrically without first
checking, using the setting tool that
at least the Basic Settings have been
made.
Refer to Section 8.
Selecting Local/Stop/Remote
Operation
The selector enables either Local or
Remote control, lockable in each position
using a padlock with a 6.5mm hasp.
When the selector is locked in the Local
or Remote positions the Stop facility is
still available. The selector can also be
locked in the Stop position to prevent
electrical operation by Local or Remote
control.
Local Control
With the selector positioned at Local
(clockwise) the lower black knob can
be turned to select Open or Close. For
Stop, turn upper knob anti-clockwise.
Fig. 3.1.
Fig. 3.1.
Remote Control
Rotate the selector to the Remote
position (anti-clockwise), this allows
remote control signals to operate the
actuator. Local Stop can still be used by
turning the upper knob clockwise.
3.2 Display–Local Indication
Fig. 3.2 The Actuator Display
The display consists of:
1.
Position Display – This is the main
7-segment position display with icons.
2.
Text Display – This is a 2 line, 16
characters dot matrix display which
allows text to be used to compliment
the position display and icons.
3.
Infrared LED's.
4.
2 x LED's for position indication.
5.
Alarm Icon – This will be displayed
for Valve, Control, and Actuator alarms.
Alarm indication is supported by fault
description text in the lower display.
6.
IR Icon – This icon flashes during
infrared communication activity.
7.
Percentage Open Icon – This icon will
be displayed when a percentage
Open value is in the upper display.
8.
System Pressure – Hydraulic system
pressure is indicated by a gauge
on the manifold. The pump will
run automatically as required to
maintain adequate system pressure.
For actuators with accumulators, the
motor is controlled by an internal or
external pressure switch.
On power up the actuator’s liquid
crystal display screen is back-lit with an
amber light and one of the indicator
LED's will be on, dependent on
position. The display screen will show
percentage open or an end of travel
symbol.
(See Figs 3.3, 3.4 and 3.5)
As standard, the red LED signifies valve
open, amber intermediate, and green
valve closed. Open and closed colour
functions can be reversed on request.
3
Operating your EH Actuator
Local/Remote
Switch
Open/Close
Switch
