1
User manual
ALFA 801 and ALFANET 801
Pulse/pause Timer-unit
VDH doc. 060344
Version: v1.0
Date: 02-02-2006
Software: ALFA 801 Flash
File: Do060344.wpd
Range: 0-999
* Operation.
The
ALFA(NET) 801
is a panel mounting timer-unit, with a pulse/pause relay function. The pulse and
pause time are set by parameters (P01 and P02). The timer-unit has a range from 0-999 minutes or
seconds (P03). The timer-unit has also a contact-input for starting the unit with pulse or pause (P05).
The
ALFA
NET
801
is provided with a RS 485 network connection, to readout or set the unit on the PC
with ALFANET software. by using a ALFANET PC-Interface.
* Installation.
On the topside of the
ALFA(NET) 801
can be read how to connect this unit, such as powersupply,
relay-output, contact input and network.
After power up the
ALFA(NET) 801
and the self test is finished the unit displays the pulse or pause
time. As the output relay is activated the LED 'on' in the display lits to indicate this.
* Control.
The
ALFA(NET) 801
Timer-unit can by controlled by three pushbuttons on the front. These keys are:
[
] SET
- view / change setting.
[
] UP
- increase setting.
[
] DOWN
- decrease setting.
* Changing current pulse/pause time.
Push the
SET
key, the LED ‘set’ starts blinking. Release the
SET
key. Now push the
SET
key again
and together with the
UP
or
DOWN
keys the current pulse or pause time can by changed. A few
seconds after releasing the keys the timer-unit returns to it’s normal operation, the LED ‘set’ switches
off.
