GE Power Supply User Manual

Contents

OPM_GTU_19X_1K0_3K0_XUS_V014 14 GT-UL Series: User manual 1.2 (US)Digital Energy ™ GT Seriesg4.1 DescriptionThe GT Series UPS is equipped with a communications interface, providing RS232 and drycontact protocols in one sub-D 9-pin female connector located at the rear of the unit. Thecommunication port on the UPS can be connected to a computer. This port allows thecomputer to monitor the UPS status and control the operation of the UPS in some conditions.Using proper UPS management software and cable, the UPS can be managed inLAN/intranet/internet environments.Some computers may have a special connector to link this communication port, or require aspecial plug-in card, or need a special UPS monitoring software. For specific information onGE Digital Energy connectivity products please contact your local dealer @ 1-800-637-1738.The dry contacts (4.3) and (optional) SNMP plug-in card (4.4) can be connected at the sametime. However, if both are operating simultaneously the remote shutdown facility for the drycontacts will not be available. Battery low and AC failure functions remain unaffected.The pin assignment of the interface connector is defined as follows:ASSIGNMENT DESCRIPTIONPIN RS-232 Dry Contact1 Low battery (Open collector)2 UPS TxD (typical RS-232 level)3 UPS RxD (typical RS-232 level) Remote shutdown (5~12V)4 Reserved for PNP5 GND GND6 Reserved for PNP Reserved7 Reserved for PNP Reserved8 Utility Fail (Open collector)9Pin Assignment Open Collector CircuitThe maximum voltage and current on pin 1,8 is 30VDC, 10mA.4 - Communication