© 2018 Baker Hughes, a GE company, LLC. All rights reserved.
Masoneilan SVI II ESD Quick Start Guide
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45
Powering Up the ASD Configuration
The ASD, or Analog Safety Demand, configuration uses a 4 - 20mA current source for power.
CAUTION
Use of a low impedance voltage source damages the SVI II ESD.
The current source must be a true high impedance current limiting
device. A proper current source explicitly enables adjustment of
the current in mA, not Volts.
To power up the ASD configuration of the SVI II ESD:
1. Loosen the four (4) cover screws and remove the cover of the SVI II ESD.
2. Connect the
+
⁄
-
terminals of the current source to the
4 - 20mA IN
connector (on
the terminal board). The current source
+
must connect to the terminal board
connector
+
, and the same for
-
. See Figure 15 on page 49.
3. Reinstall the cover and display.
4. Adjust current to 20 mA.
On initial power up of a newly installed SVI II ESD, the positioner starts up in
SETUP
mode using the default factory-installed instrument parameters. Once calibrated
and configured and set to
NORMAL
, the positioner cycles through the
NORMAL
cycle menu and the following values appear:
PRES
: Pressure - unit of measurement and value
SIGNAL
POS
(Position)
An exclamation point (
!
) appears in the display’s top left corner to indicate
that further instrument status is available.
5. Proceed to Configuration on “Configuration” on page 62 and “Calibration” on
