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Pin 1 Not used
Pin 2 UPS simulates a relay closing (open collector transistor) between Pins 2 and 4 at
utility fail.
Pin 3 Not used.
Pin 4 Common ground return (for pins 2,5, and 6).
Pin 5 UPS simulates a relay closing (open collector transistor) between Pins 5 and 4 at
low battery warning.
Pin 6 User sends a RS232 high level (>+3V) to turn off the UPS (works only during
inverter operation). UPS returns to AC mode when commercial power is restored.
Pin 7 Signal ground.
Pin 8 Reserved.
Pin 9 Reserved.
SERVICE
If any problems are observed with you MINUTEMAN UPS, contact your supplier or Para Systems
customer service department. Prior to calling please write down and be prepared to discuss UPS
status indication, and if the UPS supplies power -- either in Inverter or AC mode. A chart to assist
in locating some common problems appears on the last page.
Do not remove the unit cover, or attempt any service. There are no user-serviceable components
inside. Unauthorized service will void the warranty.
POLICY AND INSTRUCTIONS
FOR RETURN OF PRODUCT TO PARA SYSTEMS, INC .
If the UPS must be returned to Para Systems, Inc. for any reason:
1. Call Para Systems at (972) 446-7363 and ask for Customer Service.
2. Describe the problem or reason for return and you will be given a Return Material
Authorization Number (RMA #). This number must be placed on the shipping carton,
preferably on the return shipping label. The RMA # on the carton will ensure prompt handling
when received at Para Systems, Inc.
3. Pack the unit for shipment in the original carton and foam as received. Other packaging
methods can result in damage to the unit. Remember to pack the power cord supplied with
the UPS in the carton.
4. Be sure to enclose the name and telephone number of the person who can authorize repair
charges. Also include the address where you want the product returned.
UPS DB9 PIN OUT
10
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