1172 - Up-Down Counter (with Dual Relay Output)
General
purpose up / down event two-way counter with a programmable pre-set
function and two mains rated relay outputs. Built around
a microcontroller for maximum accuracy, it is suitable for us in a wide
range of process control applications.
The UP/DOWN button sets the units status to either count up or count
down. The current status is indicated on the front
panel by two different coloured LEDs. Counting is via the COUNT button or
an external contact closure located up to 10m away. MEM is used to store
the Preset count value. PRESET resets the counter to zero but retains
the Preset value for repeat counting. RESET clears the memory and resets
the counter to zero.
In the DOWN state the relay is activated when the counter decreases
from 1 to zero. In the UP state the relay is activated when the
programmable upper limit (Preset) is reached.
The current display reading and Preset limit can be saved in memory
(retained up by a 3V backup battery - not supplied).
The four-digit red LED display, control buttons (START/COUNT, RESET,
UP/DOWN, MEM and PRESET) and the Up/Down status LEDs are all mounted on a separate
board from the main control board. The relay outputs are
each rated to switch up to 250Vac/2A.
| Technical Specifications |
| Power Supply |
9-Regulated 12Vdc (Order Code PSU445 with connector
778.106) |
| Current Consumption |
220mA max @ 12V |
| Battery Backup (no included) |
3V i.e. 2 x 1.5V AA batteries (Order Code
GPUAA) and battery holder (Order
Code 691.101) |
| Individual Relay Rating |
Up to 250Vac/2AA |
| Board Dimensions |
1 x 51x122mm (Display), 1 x 103x104mm (control) |
| Board Connections |
Solder Posts (hole spacing accepts screw terminal
blocks) |
| Product Format |
Kit Form (KT
 )
or Assembled (AS)
more |
| Documentation |
 User
Manual
Schematic Diagram |
