Safety Related Parts Of The Control System (Srp/Cs) - nifty TrackDrive TD120T Series Operating/Safety Instructions Manual

TrackDrive (TD) Series
Operating & Safety Instructions
Appendix A

Safety Related Parts of the Control System (SRP/CS)

The Niftylift control system has been designed and validated according to the required standards. The
table below lists the safety related parts of the control system and the level to which they have been
approved.
The performance level (PL) of each SRP/CS is specified by BS EN 280:2013+A1 2015 section 5.11
Table 5.
Safety Related Part of the Control System
(SRP/CS)
A1 Monitoring of stabilisers - Setting up
A2 Monitoring of stabilisers - Booms
A3 Platform levelling
A4 Interlocking of control positions
A5 Prevent movements of load holding cylinders
in case of pipe failure
A1 MONITORING OF STABILISERS – SETTING UP
The monitoring of the stabilisers is PL c in accordance with ISO 13849-1:2008 as required by BS EN
280:2013+A1 2015.
1. The limits of the safety-related parts to the category selected and any fault exclusions;
The stabiliser monitoring is only active when the booms are lifted up off the boom rest such that the
boom switch is actuated.
The boom switch relies on the electrical contacts opening allowing the stabiliser monitoring circuit to
become 'active'.
The opening of the contacts is forced by the use of the spring contained within the jack foot switch
assembly. Proper maintenance and daily safety checks to be observed.
The boom switch cannot be overridden to bypass the tilt system other than by demounting the switch
with the use of tools. Reasonably foreseeable misuse.
If the boom switch is removed or if it is not maintained in accordance with the appropriate
documentation the stabiliser monitoring may not function in compliance with the requirements as a PL
c category 1 device.
2. The limits of the SRP/CS and any fault exclusion, for which, when essential for maintaining the
selected category or categories and safety performance, appropriate information (e.g. for
modification, maintenance and repair) shall be given to ensure the continued justification of the fault
exclusion(s);
Do not alter, modify or disable in any way the controls, safety devices, interlocks or any other part of
the machine.
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Approval
(Standard, Performance Level)
ISO 13849-1:2008 PL c
ISO 13849-1:2008 PL d
ISO 13849-1:2008 PL c
ISO 13849-1:2008 PL c
ISO 13849-1:2008 PL c
English/USA – 02/17