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Remote sense – AMETEK ReFlex User Manual

Page 189

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Fixed Power DC Power Supply

ReFlex Power™

5-20

M380056-01 Rev J

Table 5-3. FPDC DC Output Connector Pinout

PIN

Name

Description

1

+15V

+15V Positive Output derived after disconnect relay

2

+15V RTN

+15V Return

3

-15V

-15V Negative Output derived after disconnect relay

4

-15V RTN

-15V Return

5

+5V S+

+5V Positive Sense connected after local-remote sense relay

6

-5V S-

-5V Negative Sense connected after local-remote sense relay

7

+15V S+

+15V Positive Sense connected after local-remote sense relay

8

-15V S-

-15V Negative Sense connected after local-remote sense relay

9

CHAS GND

Chassis ground

10

+15V

+15V Positive Output derived after disconnect relay

11

+15V RTN

+15V Return

12

-15V

-15V Negative Output derived after disconnect relay

13

-15V RTN

-15V Return

14

+5V S RTN

+5V Sense Return

15

-5V S RTN

-5V Sense Return

16

+15V S RTN

+15V Sense Return

17

-15V S RTN

-15V Sense Return

A1

+5V

+5V Positive Output derived after disconnect relay

A2

+5V RTN

+5V Return Output

A3

-5V

-5V Positive Output derived after disconnect relay

A4

-5V RTN

-5V Return

DC Output Connector Accessories

·AMETEK P/N 5380449-01, FPDC Module, 9ft. Unterminated DC Output Cable Assembly.

·

AMETEK

P/N 5380449-03, FPDC Module, Right Angle, 9ft. Unterminated DC Output Cable

Assembly.

R

EMOTE

S

ENSE

Remote sensing is used to compensate for the voltage drop that occurs across
the wires connecting the load to the output of the FPDC power supply module.
A separate pair of wires for each voltage output is routed to measure the
respective voltage at the load terminals where precise regulation of the output
voltage is desired.

The remote sense leads are connected at the DC OUTPUT connector, J2, on
the front panel of the module. Connect the SNS terminal to the corresponding
voltage terminal, and the SNS-RTN terminal to the corresponding voltage
return terminal.

Special care is required in routing the sensing leads to prevent noise pickup or
coupling to the power leads; refer to the section, Noise and Impedance Effects.
The sense leads should be a twisted-pair of at least AWG #22 wire, and may
require shielding in high noise environments. Connect the shield to the shield

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