2520 Clock Module 2521 Digital Clock - AV-iQ

2520 Clock Module 2521 Digital Clock - AV-iQ
2520
Clock Module
2521
Digital Clock (flush mount)
2522
Digital Clock (surface mount)
®
T I M E C O N T RO L E Q U I P M E N T
2522
SURFACE MOUNT DIGITAL CLOCK
2521
FLUSH MOUNT DIGITAL CLOCK
2520
CLOCK MODULE
WALL-MOUNTED DUAL UNIT
F E AT U R E S
• Large, Easy-to-Read Display
• Operates Stand-Alone or as a Correctable
Secondary to a Master Clock
• 12-or 24-Hour Display Format
• Built-in Count Up and Count Down Electronic Timer
Capability
• Operates from 24 VAC, 120 VAC, or 12 VDC
•
•
•
•
•
Available in Flush-or Surface-Mount Configurations
2-Wire Power and Correction
Highly Accurate Crystal Controlled Time Base
Battery Back-up Capability Using 9-Volt Battery (not included)
Ability to Display "FirE" or "BELL" in Response to
External Signal
• Hourly Correction Capability
S P E C I F I C AT I O N S
Dimensions:
Display: 4 character, 7-segment red LED
Character Height: 2.5" (6.35 cm)
Inputs: Count/Hold, Reset, fast Set, SLow Set,
“Fire,” “Bell”
2521 (Flush Mount): 12.0" (30.5 cm) length
2.9"' (7.4 cm) depth
6.0" (15.2 cm) height
Requires 5-gang electrical box
Output: Countdown alarm
Power Required: 400 mA @ 12 VDC
500 mA @ 24 VAC
100 mA @ 120 VAC
Shipping Weight:
2520 (Module)—1.5 lbs. (.68 kg)
2521 (Flush Mount)—2.05 lbs. (.93 kg)
2522 (Surface Mount)—2.15 lbs. (.97 kg)
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2520 (Module): 9.5" (24.1 cm) length
4.4" (11.2 cm) height
2.4" (6.1 cm) depth
2522 (Surface Mount): 12.0" (30.5 cm) length
6.0" (15.2 cm) height
4.3" (10.9 cm) depth
Associated Equipment:
All Rauland Master Program Clocks
2415 Power Supply
2416 Power Supply
2423 Elapsed Timer Switch Kit
2534 Dual Face Mounting Kit
© Copyright 1996 Rauland-Borg Corporation • Printed in USA
2520/2521/2522
2520
Clock Module
2521
Digital Clock (flush mount)
2522
Digital Clock (surface mount)
®
T I M E C O N T RO L E Q U I P M E N T
DESCRIPTION
The Rauland 2520 Series of Digital Clocks are a
series of versatile, highly accurate timekeeping
instruments. The units are designed to operate as
“Stand-alone” clocks, secondary clocks (corrected by
a master program clock), elapsed timers, or countdown timers.
The 2520 Series clocks may be operated from
either a 24-volt AC source or a 120-volt AC source.
In addition, the clocks have the ability to operate
from a 12-volt DC source. The unit’s time base can
be backed up using a 9-volt DC battery. The clocks
operate with a standard 12-hour display; however,
they may be readily field selected to 24-hour display.
While intended for 60 Hz operation, they may be
easily selected for 50 Hz operation. Only two wires
are required for clock operation and correction.
When used in conjunction with a master program
clock, corrections are made automatically as
follows:
1. Every hour
2. Whenever time is set on the Master Clock
3. When power is restored after a power failure
4. When the master clock adjusts for daylight savings time.
The 2520 Series clocks may be used in time
control systems that intermix digital and analog
secondary clocks; such systems may be corrected by
a Rauland master clock. An adapter module is
usually not required in these applications.
Operation as a “Stand-alone” Clock:
Operation in this application is accomplished by
simply applying power to the unit and adding “fast”
and “slow” set buttons. No connection to a master
clock is required
Operation as an Elapsed Timer: This application requires the use of a Rauland Model 2423
Switch Kit to provide “Count/Hold” and “Reset”
functions. The units count minutes and seconds up
to one hour and then show hours and minutes up to
99:59 (hours: minutes).
Operation as a Countdown Timer: This application requires the use of a Rauland Model 2423
Switch Kit to provide “Count/Hold” and “Reset”
functions as well as “Fast” and “Slow” set switches.
The unit counts down from as high as 99:59 (minutes: seconds). An alarm output is activated when
the countdown reaches 00:00. This output may be
used to directly drive a tone alert device.
A dual mount kit, model 2534, is available for the
2522 Surface Mount unit. The kit allows back-toback or single clock mounting of the clocks in wall or
ceiling configurations.
Specifications subject to change without notice.
RAULAND-BORG CORPORATION
3450 West Oakton Street, Skokie, Illinois 60076-2958 • Tel: (847) 679-0900 • FAX: (847) 679-0625
In Canada: RAULAND-BORG (CANADA) INC. • 6535 Millcreek Drive, Unit 5, Mississauga, Ontario, Canada L5N 2M2 • (905) 821-2225 • FAX: (905) 821-8325
2520/2521/2522
© Copyright 1996 Rauland-Borg Corporation • Printed in USA
9/96
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