Overtemperature retrofit
Redundant overtemperature protection for installed sealers
An independent overtemperature circuit, separate from the PLC, removes heater power if the sealing platen exceeds its limit. It is standard on current Atlas Vac sealers and available as a retrofit kit for earlier sealers.
Please have your sealer’s serial number available.
How it works
Two independent paths to heater shutdown
The PLC monitors the process thermocouple against a programmed maximum. The redundant circuit adds a second, independent path that does not depend on the PLC or its program.
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A separate thermocouple
A dedicated thermocouple supplies the redundant circuit, independent of the process thermocouple used by the PLC.
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A separate control module
The control module applies its own temperature limit. Factory-fitted systems use an FM-rated control module.
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Direct to the safety contactor
The module acts directly on the safety contactor, in parallel with PLC heater control and the E-Stop circuit.
Retrofit kit
What the retrofit kit includes
Everything required to add the redundant circuit to an installed sealer, with fit confirmed by Atlas Vac before supply.
Kit contents
- Pre-configured overtemperature control device
- Dedicated thermocouple
- Fitting for the control enclosure
- DIN-rail mount
- Short section of DIN rail, for enclosures without spare rail
- Wiring recommended by Atlas Vac
- Schematic
Fit conditions
- Top-down thermocouples Fits most sealers whose heater assemblies use top-down thermocouples. These normally retain the older horizontal thermocouple well, unused, at the end of the heater assembly.
- Space on a DIN rail The control device mounts on a DIN rail inside the control enclosure. A short section of rail is included for enclosures without spare rail.
- Confirmed by serial number Atlas Vac confirms fit for each sealer against its serial number before the kit is supplied.
Quality and operation
Program and alarm considerations
What the retrofit changes on an installed sealer, and what it does not, for quality and production teams.
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Control program
No PLC or HMI program changes
The retrofit adds a circuit outside the PLC and requires no changes to the PLC or HMI program. Revalidation of the PLC operating program is therefore not normally required.
The qualification activity required for your installation is determined by your quality organization.
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Trip indication
An illuminated indicator on the control device
On a retrofitted sealer, a trip is shown by an illuminated indicator on the added control device, inside the control enclosure.
Notification in the HMI alarm history is a feature of factory-fitted systems.
Applicability
Which sealers the kit applies to
The route depends on your sealer’s serial number prefix. Atlas Vac confirms eligibility and fit for each sealer.
- PPC serial numbers
Retrofit kit available
Sealers with a PPC serial number can be fitted with the redundant overtemperature retrofit kit, supplied by Atlas Vac.
- AV serial numbers
Warranty policy extension
Sealers with an AV serial number are covered by a warranty policy extension. Atlas Vac advises how to receive a no-charge field retrofit kit.
Factory-fitted from
To be confirmed
The serial number from which the redundant circuit is factory-fitted is being confirmed. Until then, eligibility is confirmed against each sealer’s serial number.
Retrofit enquiries
Request an applicability review
Send your sealer’s serial number and model. Atlas Vac confirms whether the kit applies, whether it fits, and how it is supplied.
Useful if you have it
- Serial number and model
- Thermocouple arrangement, if known
- Spare DIN-rail space, if known
- Telephone
- +1 (513) 407-3513
- sales@atlasvac.com
- Hours
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- Monday to Friday
- 08:00 am – 05:30 pm
- Saturday
- By appointment
- Sunday
- Closed
- Address
- Atlas Vac Machine, LLC, 9150 Reading Rd, Cincinnati, OH 45215, USA