3129 - Up/Down 4 Digit LED Event Counter
This
low cost 4 digit LED event counter can be used to count either up or down
in the range 0000 to 9999.
Inputs are triggered by any 'make' contact so it can be used to count
pulses from switches, relays, open collector outputs or simply push buttons.
For example, a turnstile micro switch or relay output from an infrared security
beam (our kit 3130) counting cars, people or items
on a conveyer belt.
Overflow output pulses low when the count wraps around to zero. This
output allows two counters to be connected together to make an 8 digit
counter.
| Technical Specifications |
| Supply |
9-15V dc (Order Code PSU445 with
connector
778.106) |
| Current |
20 - 40mA max. |
| Count Range |
0000 to 9999 (expandable to 8 digits - see below) |
| Count speed |
30 to 35 per second max. |
| Inputs |
Reset / Up / Down / Disable |
| Input trigger |
'Make' contact e.g. switches, relays, open collector outputs
or simply push buttons |
| Overflow output |
Enables 2nd counter connection for 8 digit display |
| Display |
4-digit 7-segment with decimal point, 14mm RED LED |
| Board Dimensions |
51x64mm |
| Connections |
10 pin SIL header |
| Product Format |
Kit Form (KT
 )
or Assembled (AS)
more |
| Documentation |
 User
Manual
How To Connect Two Timers |
-
The pre-programmed firmware chips
supplied with the kit or assembled formats below can also be purchased
separately - CLICK HERE for details.
