If pneumatic equipment needs both routine alarm acknowledgement and a safety reset, put them on separate RFQ lines. Quote printed legends, openings and the adhesive layer as a keypad overlay when that is all the supplier will deliver. Even an overlay marked “Reset” cannot be accepted as a safety input device. If the order also calls for a safety reset operator, have the party responsible for machine safety confirm its function, interface and approved part number first. Leave unconfirmed items pending rather than adding them to the ordinary overlay order.
On November 10, 2026, Festo announced a planned preview of its CPX-AP-A CIP Safety module at Automation Fair in Boston. Festo says the module monitors and controls safety I/O, gives emergency stops and light curtains as examples of input devices, and expects availability in 2027. The release does not identify an overlay construction or supplier. If a separate pneumatic equipment project adds safety I/O, purchasing needs to know who implements “Acknowledge” and “Reset” on the drawing and whether the order covers printed legends, a standard input device or a part specified for a safety function.
One panel drawing can still require separate order lines
Suppose the enclosure already has a separate push button and only the “Alarm Acknowledge” marking around it will change. On the overlay line, specify the artwork revision, cutout and position, face material and adhesive. If the quote also includes a standard electrical input device, list its part number, connection interface and scope on its own line. Refer any safety reset to the party responsible for machine safety; do not ask the overlay supplier to classify the device from an identical “Reset” legend.
- Overlay only: Reference the controlled artwork. Check the legend, cutout, alignment and bonding on the sample. State that circuitry, buttons and controllers are excluded.
- Standard input device also included: List the overlay and input device separately, with their own part numbers, connections, mating parts and supply boundaries. The quote description does not determine whether a part performs a safety function.
- Safety reset required: Reference the project's approved functional requirements and relevant drawing number. Identify who selects and accepts the part. Until the project approves it, neither overlay sample approval nor substitute-part acceptance establishes safety acceptance.
ODVA describes CIP Safety as a functional safety communications protocol for industrial networks. That description concerns communication. It does not establish that a particular key is suitable or replace validation by the party responsible for machine safety.
Before releasing the order, check who approves each drawing
Match the overlay order to the approved artwork and the input device order to the approved component and interface. If the only record is an appearance drawing marked “RESET”, leave safety-related items pending and ask the machine safety owner to determine the scope. A generic “reset button” on a quotation cannot fill that gap. Approval of an overlay with revised lettering covers the legend and bonding in that revision; it does not replace safety circuit or machine acceptance.
Shenzhen Baoshengda Technology Co., Ltd. specifies that a separately ordered overlay does not include switch circuitry. See its custom graphic overlay page and the Chinese source. To request a quote through the project contact page, share the artwork, cutout position and the original parts to be retained, and mark the legends that will change. For machine safety items, use the approved documents after the responsible project team has defined the scope.
For the distinction between an overlay and a standard electrical input device, see custom HMI overlay and input device supply scope (Chinese). For the wider equipment handoff, see factory and site acceptance for equipment packages. The annotated cover shows icons and a tail to distinguish visible markings from component construction. It does not depict or certify a safety part.