TN836 High Current Digital Series AC to DC Power Supplies
MT-3/4 Radio Systems
TECHNICAL NOTES
Page 3 of 4
LMRSALES@CODANCOMMS.COM
CODANCOMMS.COMTECHNICAL NOTE:
TN836, REV 3-0-0, © Aug 2016
CANADA/US +1 250 382 8268 | TOLL FREE +1 800 664 4066
Remote Control and Alarm Connector
A REMOTE connector on the back panel of the power supply allows for the following functionality:
Pin Number Pin Description Functionality
Pin 1 REM SD+ Remote shutdown control lines (TTL compatible)
Pin 2 REM SD- Hi = output off ; Low = output on
Pin 3 REM SNS+ Remote voltage sense lines for tighter voltage regulation at load
Pin 4 REM SNS- Default sense point is at busbars
Pin 5 Common Alarm Output Common
Pin 6 NO Alarm Output Normally Open contact (0.5 A 125 Vac max.)
Pin 7 NC Alarm Output Normally Closed contact (0.5 A 125 Vac max.)
Alarms
Alarm Output activation setting is enabled or disabled through the TCP/IP web based utility (for units without the
Ethernet option the form C relay output will always be activated for an alarm condition). Available alarms are as
follows:
DC Output Voltage Failure Alarm Output voltage rises above ≈ 110% of the maximum rated output.
Alarm latches output off , clears when DC output manually re-enabled.
DC Overcurrent Shutdown Alarm Output current rises above ≈ 115% of the maximum rated output.
Alarm latches output off , clears when DC output manually re-enabled.
AC Input Voltage Failure Alarm AC Input voltage falls below ≈ 90 Vac.
Alarm latches output off , automatically clears when AC input rises .
above ≈ 100 Vac for 3 seconds.
System Failure Alarm Internal system failure.
Alarm latches output off , clears when DC output manually re-enabled.
and internal fault is no longer present.
Over-Temperature Alarm Internal over-temperature limit exceeded.
Alarm latches output off , automatically clears when temperature .
returns to normal operating range.
Parallel Unit Offl ine Alarm Communication is lost between parallel units.
Output state unaff ected. No eff ect if parallel operation is not active.
To Next Page
Loading...
Need help?
General