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This versatile counter with prescaling can be configured for
quadrature or uni-directional inputs, dual preset or single preset with batch
preset. Reset can be automatic, manual or electronic with a sink (NPN) or source
(PNP) input.
The display is a supertwist high visibility backlit LCD which can be viewed from
any angle. The count is on the main display and the preset value (or batch
preset) is on the lower display.
Simple programming via menu driven display.
High visibility supertwist LCD display can be viewed from any angle.
Backlight programmable ON, OFF or AUTO.
40 years data retention with no power.
Two programmable preset points.
Decimal point can be set up to 3 decimal places.
Wide range of prescaling.
12VDC output to drive a sensor (when AC powered).
85 - 265VAC or 10 - 26VDC for worldwide use.
Two output relays with contacts rated at 5A.
Output relays individually programmable to NO or NC.
Outputs can be set to latch or set to pulse with individually
programmable pulse durations.
CE, UL and cUL approved.
All programming, reset and presetting can be carried out
from the front panel. When powered from an AC supply, there is a 12VDC output to
drive a sensor. The key below each digit sets the P1 or P2 (or batch) preset
value on the lower display. The red reset key resets the display count to zero
or P1 (according to programming). In normal operation the colon illuminates
whenever relay 1 is active. In P2 Set mode the colon illuminates whenever relay
2 is active.
Please note the electrical connections are
different to the previous version (7921).
Specification
Supply Voltage
85 - 265VAC or 10 - 26VDC at 100mA.
Auxiliary Output Supply
12VDC ± 10% @ 100mA (when operating from AC supply).
Display
2 rows of 6 digits, supertwist black on silver LCD with yellow/green LED
backlight. Upper row
7mm (0.28in) high indicates count, lower row 4mm (0.16in) high indicates P1/P2
preset point. Also Relay 1 Active annunciator.
Backlight Control
Programmable to Always ON, Always OFF or AUTO (ON for 30s following last
keypress).
Preset Points
Two user selectable preset points 1 - 999999.
Count Inputs
Voltage Opto-isolated 10 - 30VDC.
Quadrature and uni-directional
Input A (quadrature and uni-dir. count) NPN or PNP
Input B (quadrature and UP/DOWN in uni-dir. mode)
Maximum input frequency 10kHz.
Duty cycle Maximum 60:40 or 40:60 mark/space ratio.
Prescaler Multiply 0.00001 - 9.99999, default 1.00000.
Divide 1 - 99999, default 00001.
Manual Reset
Can be disabled on installation or remotely reset.
Remote Reset
Contact closure or pulse (15 ms response time).
Automatic Reset
Programmable for automatic or Manual/Remote reset
Data retention
40 years minimum
Output Relays
Contact Connection
Both individually programmable as NO or NC SPST
Contact Rating 5A 260VAC/30VDC 1300VA/150W.
Operating Temp.
-10°to +60°C.
Storage Temp.
-20°C to +70°C.
Environmental Protection
IP65 when properly installed using the sealing gasket supplied (without bezel).
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