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+1 540-563-2000 P.
+1 540-362-9800 F.
www.valcom.com

Valcom, Inc.
5614 Hollins Road
Roanoke, VA  24019
USA

Frequently Asked Questions

Can the digital clock be used as an independent clock?

No, the V-D2425B and V-D2440B digital clocks require Valcom 2-wire digital correction. 

Some clocks require a 9 volt battery backup for timekeeping. What happens to the V-D2524B or V-D2440B if a power failure occurs? 

Upon restoration of power, the clock immediately receives a correction signal from the master clock and resets itself to display the correct time.  
This occurs within seconds of “power-up”, so no battery backup is required for a timekeeping base within the individual clocks.  Since the clock 
does not require a battery backup, the clock never needs to be opened.

What is the minimum operating voltage for the digital clock? 

The minimum operating voltage is 18VDC. 

How can I display “BELL” text on the clock?

The word “BELL” may be sent to the clocks via contact closure on the V-DCPI Digital Protocol Interface

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Summary of Contents for V-D2425B

Page 1: ...V D2425B V D2440B Digital Clock Installation and Programming Manual V1 Valcom Inc 5614 Hollins Road Roanoke VA 24019 USA 1 540 563 2000 P 1 540 362 9800 F www valcom com...

Page 2: ...tion Included in the Kit 3 Surface Wall Mount Installation 4 Surface Wall Mount Installation continued 5 Double Mount Installation 6 Double Mount Installation continued 7 Double Mount Installation con...

Page 3: ...Surface Mount 24VDC Kit Kit will be labeled D PK 3 24 S 24VDC Power Harness 18 AWG Orange Green Yellow Kit will be labeled D MK WLL PLTC 1 4 6 32 x 1 Machine Flat Screws 4 6 19 x 1 2 Flat Head Screws...

Page 4: ...4 1 540 563 2000 P 1 540 362 9800 F www valcom com Valcom Inc 5614 Hollins Road Roanoke VA 24019 USA Surface Wall Mount Installation e w q r t y Installation...

Page 5: ...w them through the four holes in the center of the inside of the housing and the four holes in the gang box Note If using a metal gang box a ground must be provided to the gang box 2 Feed Wiring Into...

Page 6: ...6 1 540 563 2000 P 1 540 362 9800 F www valcom com Valcom Inc 5614 Hollins Road Roanoke VA 24019 USA Double Mount Installation q t i a y r w w e u o Installation...

Page 7: ...tal mounting bracket screws in order to provide ground to the metal mounting bracket The metal mounting bracket MUST be secured by both the screws going to the switch box AND the anchors going into th...

Page 8: ...f the base to secure the base to the metal mounting bracket 6 Connect switch box wires to clock harness Take the wiring harness supplied with the clock and make all necessary connections between the w...

Page 9: ...Closure 1 2 3 4 J7 RS485 Input A Input B Output A Output B J3 Relay Output 4 3 2 1 Relay 1 N O Relay 2 N O Contact Rating 0 3A 120VAC 0 5A 24 VAC Note Be sure to have a jumper present on Pin 1 Pin 2...

Page 10: ...m com Valcom Inc 5614 Hollins Road Roanoke VA 24019 USA 2 Wire Digital Communication Wiring Informatio n V VCU V VCU 120VAC or 240VAC 120VAC or 240VAC 24VDC Wired Analog Clock 24VDC Wired Analog Clock...

Page 11: ...restoration of power the clock immediately receives a correction signal from the master clock and resets itself to display the correct time This occurs within seconds of power up so no battery backup...

Page 12: ...ng an input signal What do I do If interfacing with other systems make sure that the input voltage is zero when not applying a correction signal When taking this measurement you must be sure that the...

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