© 2018 Baker Hughes, a GE company, LLC. All rights reserved.
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BHGE
Powering Up the DSD Configuration
The DSD, or Discrete Safety Demand, configuration uses a 24 VDC power source. To power up
the DSD 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 24 VDC power source to the
24 VDC ESD IN
connector (on the terminal board). The voltage
+
must connect to the terminal
board connector
+
, and the same for
-
. See Figure 16 on page 49.
3. Reinstall the cover and display.
4. Turn on the voltage source. On initial power up, of a newly installed SVI II ESD, the
positioner runs in SETUP mode using the default instrument parameters installed
at the factory. 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 page 62 and “Calibration” on page 66.
Powering Up the A/DSD Configuration
The A/DSD, or Analog/Discrete Safety Demand, configuration uses both a 4 - 20 mA current
source (for the unit) and a 24 VDC source (for the safety trip) 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 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 14 on page 42.
3. Reinstall the cover and display.
4. Adjust the current to 20 mA.
5. Connect the
+
⁄
-
terminals of the 24 VDC power source to the
24 VDC ESD IN
connector (on the terminal board). The voltage source
+
must connect to the
terminal board connector
+
, and the same for
-
6. Reinstall the cover and display.
