Watkiss DigiVAC, Руководство по обслуживанию

Страница: 13 / 142

Overview
•
System Overview
Watkiss DigiVAC Service Manual - Issue 2 - 29/11/04
7
Drive Motor. This ensures consistent revolution speed regardless of load
exerted on the machine and is essential for two-tower operation. Rel.B bases
require software V2.1a or later.
Top Module: The top module transports the collated sheets over the top drum
and down into the rear conveyor. In two tower configurations, Tower B has a
different top module which includes the connecting bridge.
DigiVAC Standard Control Panel: The DigiVAC Standard is fitted with a
touch membrane control panel which includes the display, control panel keys,
and speed control. In order to change the software of the DigiVAC Standard,
the Eprom must be changed.
Control Panel: The is fitted with a Graphical User
Interface (GUI). This consists of a Central Processing Unit (CPU) housed in
the Base Module, a link cable and a touch-screen. The CPU holds the boot
firmware and application software that controls the and the opera-
tion of the touch-screen.
System Power: Power enters the Base Module via the input fuses next to the
input connector, EMI filters and double pole isolation on/off switch. From
here it goes via the torroidal transformer (except on 240V machines) which
supplies the Interface PCB in the Base Module. The Interface PCB distributes
power throughout the machine.
Drive Motor: The drive motor turns the drive belts which in turn drive the
feed system in each bin. The feed timing is controlled by a clutch on the clutch
drive shaft of each bin. A tachometer located on the end of the drive motor
shaft provides the master timing signal for the whole system.
Communications: The Interface PCB is connected by separate power and
communications cables to each of the feed modules. Each 4-bin feeder module
has its own PCB. The feeder module PCB interprets instructions from the Con-
trol Panel. The feed bin PCB controls each bin clutch so that drive is engaged
at the exact moment and for the correct duration required.
Paper Sensors: Sensors on each bin provide feedback via the PCB to the
Interface PCB/Control Panel for the detection of double feed, miss feed and
empty bin conditions. A message is displayed on the control panel relating to
each condition.
System Air: The blower motor delivers air throughout the system for sheet
separation. Air passes to each bin through connected vertical pipes (sealed
with ‘O’ rings). The air blow in each bin can be controlled using the air taps
(see operating manual). The air blow is regulated by the 900-187 Air Blow
Control PCB.
The vacuum pump delivers vacuum throughout the system through connected
vertical pipes. Each feed bin has an individual valve and filter. The valve is
switched on and off by the main interface PCB. The vacuum pressure is fac-
tory set.
Paper Transport: Sheets are transported by dual conveyor belts upwards,
over a wide diameter drum at the top of the machine, and then down into jog-
ger or booklet-maker. Transporting the sheets upwards gives the paper a long,
straight path into the online finishing equipment.