AMREL SPS-A Series
Operation
M550129-01 Rev A
3-17
3.4
REMOTE CURRENT PROGRAMMING
Remote current programming is used for applications that require the
output current be programmed (controlled) from a remote source. An
external resistance or external voltage source may be used as a
programming device.
When using remote current programming, a shielded, twisted-pair,
hookup wire is recommended to prevent noise interference with
programming signals.
3.4.1
REMOTE CURRENT PROGRAMMING USING RESISTANCE:
The resistance coefficient for remote current programming is 5k
ohms/100% rated output with respect to terminal J1-23 (IP RTN). The
programming current from terminal J1-22 (IP RES) is factory set for 1
milliampere. This yields a coefficient of 1.0% of rated output current for
each 50 ohms. If multiple switches or relays are used to program
different levels, make-before-break contacts are recommended.
Note
: If an external resistance is used for remote programming, the
current programming return (IP RTN), terminal J1-23, must be connected
directly to or within ±3 volts of the power supply common terminal, J1-24.
See Figure 3-9 for connection requirements.
Figure 3-9. Remote Current Programming Using Resistance
Summary of Contents for AMREL SPS-A Series
Page 2: ......
Page 3: ......
Page 4: ......
Page 6: ...ii This page intentionally left blank ...
Page 8: ...iv This page intentionally left blank ...
Page 10: ...vi This page intentionally left blank ...
Page 16: ...CONTENTS AMREL SPS A Series vi M550129 01 Rev A This page intentionally left blank ...
Page 22: ...Overview AMREL SPS A Series 1 6 M550129 01 Rev A This page intentionally left blank ...
Page 42: ......
Page 71: ...AMREL SPS A Series Operation M550129 01 Rev A 3 29 This page intentionally left blank ...
Page 72: ......
Page 76: ...Maintenance AMREL SPS A Series 4 4 M550129 01 Rev A This page intentionally left blank ...