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Input Response As standard, the input response is set to 22ms for optimum performance, however this delay is user programmable and can be reduced or extended to suit the exact site conditions. Sleep Mode All units are equipped with ‘Sleep’ mode which is typically used in substation applications where the visual and audible outputs are disabled during unmanned periods to reduce drain on the station batteries. Whilst in ‘Sleep’ mode, the alarm logic will continue to react in the normal way including the operation of the group alarm relays and individual repeat and common alarm relays – ONLYthe drive signals to the LEDs and the audibles aredisabled until the unit is placed back into the ‘Run’ mode. Auto Accept Timer Dual HornFacility In unmanned applications it is common to have an automatic accept facility after apre-set time, typically one minute; this is a standardfeatureon the UC625. Two horn relays are fitted as standard and each pair of alarm ways can be selected to operate either a critical or non-critical integrally mounted horn relay. In substation applications it is common for one relay to be used to operate the externally mounted station bell and the second relay to be used to operate a common power failure audible alarm. Power Consumption Power consumption is kept to a minimum by the use of super-bright LEDs. Integral Redundant Power Supplies In order to maintain the highest level of reliability in safety critical applications, all models areequipped with integrated dual power supplies. The standard unit is equipped with two fully isolated universal input supplies, each capable of accepting either 85-264VAC or 88-360VDC. As an option the secondary supply can be suitable for 24VDC if specified at the time of order.

UC625 Compact Alarm Annunciator - 19514 Features & Benefits

Inputs All inputs are optically coupled and comply to the stringent requirements of the European Electromagnetic Compatibility and Low Voltage Directives. The standardinput voltage is 24VDC but 48VDC,125VDC or 250VDC are available as an option. Auxiliary Relays Each channel is equipped with an integral relay facility, typically used to initiate inputs to thirdparty devices such as RTU, SCADA or DCS systems. On board DIL switches or jumpers allow the user to select the manner in which the relay responds; normally energised or de-energised relay state and if the contact is normally open or normally closed in the non-alarm state.

154mm

SUPPLY 1SUPPLY 2 TESTACKMUTERESET

UC625

264mm (28 way) 130mm

Various Sizes Various sizes are available from 12 to 40 alarm points. Each unit is supplied with two additional alarm points for monitoring the two integral power supplies. Dimensions are as follows:
N O . OF O VERALLINMM C UT - OUTINMM W AYS H EIGHT W IDTH H EIGHT W IDTH 12154152141136 16154180141164 20154208141192 24154236141220 28154264141248 32154292141276 36154320141304 40154348141332 Fully Field Programmable Flexible design allows selection of a range of features and a choice of operational alarm sequences, which are compliant to ISA S18.1 1979. Alarms can be set to operate from either a normally open or a normally closed volt-free signal contact. ASIC Technology The UC625 continues our success with field proven ASIC technology already employed in our range of alarm products, This gives the user both greater flexibility and reliability.