3074 - 8-Channel PC Controlled Relay Board
This
PC printer (parallel) port relay board provides independently programmable
real-time control for each of the eight onboard mains rated relays.
Relay
outputs can be used to automatically turn On/Off lights, motors & other
devices around the home, office, laboratory or factory. The software interface
allows you to program and save an infinite number of On/Off sequences.
Alternatively, you can write your own software
with a DLL from
http://www.logix4u.cjb.net/.
NB If this board is powered up and connected to the computer,
all of the relays will momentarily turn on when the PC first boots up. If this
is a problem, please look at our 8-Channel Serial Port Isolated
IO Relay Controller instead.
- Can be used with any PC parallel port on a 286 upward (remember
those?)
- Each channel has a mains rated relay output
- LED relay status indicator for each relay
- For a BOXED version of the project see Order Code
3165
- NB If this board is powered up and connected
to the computer, all of the relays will momentarily turn on when the
PC first boots up. If this is a problem, please look at our
8-Channel Serial Port Isolated IO Relay Controller
instead.
| Technical Specifications |
| Power |
Regulated 12Vdc (Order Code PSU445 is
suitable) |
| Current Consumption |
300mA max (40mA standby plus ~30mA per active relay) |
| Outputs |
8 x SPDT Relays |
| Output Load |
5 Amps @ 250Vac max. per relay (Relay
Datasheet) |
| Relay Connections |
C, NO, NC (Relay
FAQ) |
| Computer Interface |
Parallel port |
| Dimensions |
70 x 200 x 25 mm |
| Connections |
Power: 5.5 x 2.5mm DC socket
Relays: Screw terminal blocks
Computer: Male DB25 connector |
| Product Format |
Kit Form (KT
 )
or Assembled (AS)
more |
| Documentation |
 User
Manual |
| Software |
 Windows Software Interface |
Software Interface
Our
new Windows interface has greatly improved features and allows almost
limitless 24/7 programmability. Programming sequences can be saved to disk
for reuse. Compatible with Windows 3.1 to XP. Download the
New Windows Software here.
We also have a set of
DOS-based utilities that allow you to write batch files to control the
relay board to your requirements. A sample test program is provided. The
older version
Windows-based Program written especially for this project is also available.
A
Linux-based version is also available for download.
Options
- Can be used with our optional Parallel Input RF Data Link Transmitter
(Order Code 3175) and Parallel Output RF Data
Link Receiver (Order Code 3176)
Additional Items Required
- Power Supply: 12Vdc, 500mA minimum (Order Code PSU445)
- M-F Parallel Port Lead (Order Code LDC136)
