WTC MedWeld 3005, Руководство оператора

Страница: 38 / 206

=UTGU\T# %?fUbfYUg
!"" =UTGU\T# %?`UbQd_bµc7eYTUD)## "
= #" "%1`bY\" "
Range/Frequency V/F Counts / A per Half-Cycle
0 – 25 kA @ 60 Hz 18 counts / 100 A rectified average per half-cycle
0 – 50 kA @ 60 Hz 9 counts / 100 A “ “ “ “ “
0 – 100 kA @ 60 Hz 5 counts /100 A “ “ “ “ “
0 – 25 kA @ 50 Hz 21.6 counts / 100 A “ “ “ “ “
0 – 50 kA @ 50 Hz 10.8 counts / 100 A “ “ “ “ “
0 – 100 kA @ 50 Hz 5.4 counts / 100 A “ “ “ “ “
The SCIB is designed to operate at all ambient temperatures
between 0 and 50
°
C. It can be mounted in any orientation. Take
appropriate steps to protect the SCIB from exposure to water or
condensation. The board requires no special heat-sinking or air
flow for cooling.
The SCIB has three connectors. A female, 15-pin HDD connector
accepts a standard timer-to-firing board cable, which connects to
either a 645 firing board or the input of a Firing Board
Multiplexer. In either case, the maximum allowable cable length
between the SCIB and the “downstream” device is 4 meters.
A male, 15-pin HDD connector connects another standard timer-
to-firing board cable. This cable goes back to the weld timer. The
maximum allowable length of this cable is 35 meters.
The third connector on the SCIB is a 2-pin, pluggable terminal
strip of the Phoenix variety. This connects the secondary current-
sensing coil. NEVER CONNECT EITHER TERMINAL OF
THIS CONNECTOR TO GROUND.
If the cable for the
secondary current-sensing coil has a shield, disconnect this shield
from either of the signal leads. Connect the shield to cabinet
ground before routing the wires to the SCIB.
Except when acknowledging a command from the weld timer
(see below) or during one of the secondary current measurement
modes, all signals between the firing card and timer board simply
“pass through” the SCIB. Its circuitry cannot drive the firing
signals (PLS1 and PLS2), so the SCIB cannot cause SCR firing.
The two bi-color LEDs on the SCIB are labeled POWER/ERROR
and MODE.
On power-up, the POWER/ERROR LED is lit red. After the SCIB
does a self-test and initializes, the POWER/ERROR LED glows
green. If either the self-test or initialization fails, the POWER/
ERROR LED will remain red. On a normal power-up, this LED
will flash red very briefly (less than 1/4 sec) and then glow green.
After a successful power-up, the SCIB routes the C
CNT
and V
CNT
signals from the firing board to the weld timer. The MODE LED
will be off until a command is received from the weld timer. In
this mode, the SCIB essentially does nothing.