4VAL Operating & Maintenance Manual Version 1.1 © Newman Labelling Systems Ltd Page 14 of 56
SECTION 3 MACHINE OPERATION – General
All labelling machine operations are carried out using the switches and display
keypad on the Operator Panel. Separate small control boxes may be fitted for
proprietary equipment e.g., hot foil coder.
The labelling machine is controlled by a PLC (programmable logic controller)
situated in the main electrical cabinet at the back of the machine. Two manufacturers
of PLC are used in this model range; Siemens and Allen Bradley. The following main
sections detail the specific Operational Functions and show the different screens due
to the different PLCs and keypads. Although two different PLCs are used the
functions, modes, switches and alarm messages are the same for both versions.
Operator Panel Controls.
3.1 MODE KEY SWITCH
The control system operates in two modes:
a) RUN
b) SET UP
The two modes are selected with a key-switch at the operator panel. SET UP mode
allows access to inhibiting some security functions for machine setting and testing
purposes. Selecting RUN mode will automatically switch on any security systems that
were inhibited in Set Up mode (e.g. Overprint Detector, Missing Label Sensor and
Bar Code Reader. Refer to the relevant section for your control system and keypad
functions available in each mode. The key may be removed with the switch in RUN
position to prevent unauthorised access to SET UP mode.
Machine ON / OFF
HMI screen & keypad
(Siemens shown)
(Reset Button not used)
Machine Speed Dial
Emergency Stop
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