QUICKSTART GUIDE
See the Appendices of the reference manual for more details. Use an RFQ for other variations.
3.4UL Requirements for DC-Powered Units
1.Minimum 18 AWG cable for connection to a centralized DC power source.
2.Minimum 14 AWG cable for connection to a earthing wiring.
3.Use only with listed 10 A circuit breaker provided in building installation.
4.“Complies with FDA radiation performance standards, 21 CFR
5.Fastening torque of the lugs on the terminal block: 9
6.For AC and HI powered units, use only with listed 20A circuit breaker provided in building installation. Circuit breaker shall be provided in end system or building as disconnect device.
7.Centralized DC power source cable securing; use at least four cable ties to secure the cable to the rack at least 4 inches apart, with the first one located within 6 inches of the terminal block.
3.5Alarm Contacts
The alarm contacts feature provides two
The first NC alarm contact (top position) is a “software alarm”, operated by user settings in the Unit software. The user can disable the software alarm feature with a software configuration command if desired. When the software alarm is enabled, the
The second (bottom position) NC alarm contact is held closed when there is power on the main board inside of the Unit. This provides a “hardware alarm” because the NC contacts will open when internal power is lost, either from an external power down condition or by the failure of the Unit power supply. For an Unit with the redundant power supply option, the hardware alarm contact will change state if any one of the power supplies fails.
Useful information about the alarm contacts:
•The four terminal block (1, 2, 3, and 4) is adjacent to the power supply.
•The top two pins (1 and 2) are software operated.
• The bottom two pins (3 and 4) are hardware operated.
•By default, the alarm contacts are NC (normally closed).
•Software operation must be enabled to get the alarm traps. Further information is provided in this manual.
The green alarm contacts are on the front rear area (next to the power source) of the Unit.
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