HP Indigo 7800 Programmable Logic Controller PLC Interlocks Troubleshooting Gu
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- HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 1
Guide Document details Purpose Scope Document number Revision number Date Security level To describe how to troubleshoot the Programmable Logic Controller (PLC) interlocks. This troubleshooting document is for customer engineers only. HP Indigo 7600 Digital Press, HP Indigo 7800 Digital Press, HP - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 2
contents 1 Overview ...1 Design ...1 2 Procedures ...5 Diagnosing the PLC interlocks ...5 Common problems indicated by the PLC...6 Interlock and E-Stop devices...7 Appendix A Revision history and confidentiality notice ...9 Revision history...9 Printing instructions...9 Confidentiality notice...9 ii - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 3
system design to protect the operator from damaging himself or the press. Due to safety regulation (EN1010), an additional interlock line was 6 wire connector. The new PLC interlock box is located in the exit side of the press. If you open the exit door and lift the stacker bridge, it is located on - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 4
3 Exit door Figure 1-2 PLC interlock box 1 Interlock lines 2 Power input - 24V. These LEDs are always OFF. 3 00 - K1 01 - K2 02 - K3 03 - PLC ready 2 Chapter 1 Overview - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 5
. It might trip if one of the safety conditions are not met. ● In the HP Indigo 7600 Digital Press, the shunt will trip the CB when the PLC activates K3 and the press software deactivates it. ● In the HP Indigo 7800 Digital Press, the shunt will trip the CB only when the PLC deactivate K1, K2, or K3 - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 6
Figure 1-4 Shunt 4 Chapter 1 Overview - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 7
indicates only one interlock line. It is more efficient to troubleshoot the interlocks by following the 3 procedures described below. Checking starting at 80% of main motor speed). The LED indications do not work when the press is in Standby. ● 03 - PLC Ready - Indicates that there is a mismatch - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 8
this. Troubleshoot the interlocks software line from the software (UI). 3. If all the LED interlocks indications are OFF, the source of the problem is probably the problem Follow these steps to determine the source of the problem. 1. Change the press to Standby. 2. Bypass the press interlocks using - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 9
work (all LEDs are off) PLC software error message at the press UI Shunt short circuit What to check Actions The press is running. Check motor and bearings. Wiring according to LED indications. Locate the source of the problem and check the wiring on that interlock. See Interlock and E-Stop - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 10
● Lines 2-5: Second hardware line. The interlock LEDs on the PLC show indications of the problem. ● Lines 3-6: Software line. Indications of the problem are in the press UI. Proper operation of interlock and E-Stop To check if the device (interlock or E-Stop) are operating properly, do the following - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 11
to scope: HP Indigo 7900 Digital Press Responsible Engineer (TS) Press Group Manager Engineering Documentation Manager Configuration Control Written by Yaron Brosh Moty Yaverboum Yokhay Shalem Ronit Shugal / Isaac Diwan Sigal Aknin Chaim Mateh Printing instructions Follow these recommendations - HP Indigo 7800 | Programmable Logic Controller PLC Interlocks Troubleshooting Gu - Page 12
copyright notice, which appears in this document, is purely precautionary and shall not be deemed to constitute publication or intent to publish, in whole or in part. © Copyright 2015-2016 HP Development Company, L.P. All rights reserved. 10 Appendix A Revision history and confidentiality notice
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Programmable Logic Controller (PLC) Interlocks
Troubleshooting Guide
Document details
Purpose
To describe how to troubleshoot the Programmable Logic Controller (PLC) interlocks.
This troubleshooting document is for customer engineers only.
Scope
HP Indigo 7600 Digital Press, HP Indigo 7800 Digital Press, HP Indigo 7900 Digital Press
Document number
CA393-08660
Revision number
01
Date
5 October 2016
Security level
HP Confidential
The information contained in this document is accurate at the date of release.
Check CE Suitcase for the most recent version of this document.
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