GE Masoneilan SVI II ESD Installation And Maintenance Manual page 77

Wiring a Position Retransmit
To connect:
1. Strip approximately 1/4" (6.35 mm) of the insulation at the end of wires (wire size 14 to 28
AWG, 2.5 mm2 to .08 mm2).
2. Connect the +⁄- terminals from the 4-20 mA Out to the position retransmit input signal: +
to + and - to -. See Figure 54 on page 81, Figure 55 on page 82 or Figure 56 on page 82,
depending on card type.
To troubleshoot retransmit connections:
Ensure that the retransmit circuit has a minimum voltage of 10 V (maximum 30 V).
Ensure the minimum AO current is 3.2 mA. If the module loses power and the AO circuit
remains powered, the AO signal will be 3.2 mA.
Compliance Voltage in Single Drop Current Mode
The SVI II ESD requires 9.6 V at 20 mA and 11.0 V at 4 mA. Typical HART
Voltage at higher current and MORE current source have LESS Voltage available at higher
current. The SVI II ESD is unique in that it requires LESS Voltage at higher current which
compliments the characteristic of the source requiring only 9.6 V at 20 mA.
© 2016 General Electric Company. All rights reserved.
For proper operation, maintain signal polarity + and - respectively.
CAUTION
Improperly or inadequately grounded installations can cause
NOTE
noise or instability in the control loop. The internal electronic
components are isolated from ground. Grounding the case is
unnecessary for functional purposes but grounding the case may
be necessary to conform to local codes.
Masoneilan SVI II ESD Installation and Maintenance Manual
®
devices require MORE
| 77
=