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1.8
Output Over Voltage Shut Down
The SPS will automatically shutdown if the output voltage exceeds the preset value. The Over Voltage Shutdown
voltage is preset in the factory but may be adjusted.
1.9
Input Over Voltage Shut Down
If the input voltage is outside the specified range, the SPS may shut down until the allowed voltage is restored.
1.10
Input Inrush Current Limiter
On startup, the peak AC inrush current is limited to twice the maximum operating current. The output voltage and
current rise slowly from zero during startup, that prevents nuisance trip of input circuit breaker.
1.11
Over Temperature Shutdown
When the SPS reaches its maximum operating temperature, it will progressively reduce the output current to
attempt to reduce the heat within the unit. In extreme circumstances, the rectifier will totally shutdown.
The maximum operating temperature range is: -10 to 70° C
1.12
Reverse Polarity Protection
The SPS has an internal reverse polarity protection fuse and crowbar diode fitted. These parts are not user
serviceable, and the rectifier will require returning for servicing if they fail.
1.13
Parallel Rectifier Operation
The SPS may be connected in parallel to source more current, or to provide a degree of redundancy. The rectifiers
should have the load share signal connected between the rectifiers. This is achieved by connecting the load share
signal line on the Alarm & Control Interface port on each rectifier. The rectifiers with the higher voltage output will
automatically adjust their output voltage down so that they each take a uniform share of the load.
The SPS connected in parallel must all be of the same brand and voltage rating.
1.14
External Shutdown
The SPS can be remotely forced to shutdown by applying a 10-12V signal to the rectifier load share pin of the
Monitor connector.
1.15
Alarm & Control Interface
The monitor connection allows remote monitoring of the rectifier. The monitor connection is a RJ45 socket. The
pinout of the socket is as follows:
Pin #
Pin 1
Load Share signal (0-5V), external shutdown (10-12V in)
Pin 2
LVD Synch signal
Pin 3
Temp Comp Probe/Output Voltage Control
Pin 4
Rectifier Failed Signal – Pulls to ground via 4k7 resistor
Pin 5
-ve for Temp Comp Probe (signal Gnd)
Pin 6
Rectifier "Off Normal" alarm (open collector output)
Pin 7
+V Battery Out (max 250mA)
Pin 8
AC fail (open collector output) (off = AC present)
The open collector outputs are rated at 100V, 10mA.
P.O. Box 1306
Newport Beach
California 92663
Description
1
Pin 1 is the left most pin,
when facing the socket
with the pins on the
bottom.
Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: techservice@newmarpower.com
4
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