4E0020.01-090 B & R Automation
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The B & R Automation 4E0020.01-090 is part of the 4E0 PanelWare Accessories series and features 16 short-stroke keys arranged in a 12 numeric plus 4 user-labeled key layout. The keypad has two female connectors, four yellow LEDs with 3 mA current per lit LED, and supports up to seven daisy-chained keypad modules. It measures 96 mm by 96 mm with a depth of 35 mm, and operates in temperatures from 0 to 50 degrees Celsius.
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Product Description:
The 4E0020.01-090 keypad module is an operator-input accessory produced by B & R Automation for the 4E0 PanelWare Accessories series. Installed next to a PanelWare HMI, it provides a hard-key interface so machine operators can enter setpoints or commands without relying only on a touch screen. By combining numeric entry with dedicated function keys, the module streamlines routine adjustments and helps keep on-screen graphics uncluttered in industrial automation cells.
Mechanically, the front plate measures 96 mm high and 96 mm wide, while the body extends only 35 mm into the cabinet, which helps in shallow panel layouts. The surface carries 16 short-stroke keys that give consistent tactile feedback, and their arrangement follows a 12 numeric + 4 user-labeled pattern, so four buttons can be relabeled for process-specific actions. Two female connectors on the rear route both the 24 V supply and the PanelWare bus, enabling straightforward daisy-chain wiring. Illumination feedback is handled per key, and each lit switch draws only 3 mA of LED current to control heat rise. During shipping or warehousing, the keypad withstands storage temperatures from −20 to 60 °C without damage.
In operation, the bezel exposes 4 yellow LEDs that the PLC can toggle for status or alarm signaling. A single branch of the bus can host up to 7 keypad modules, which keeps controller I/O usage low on large panels. Electronics operate in ambient temperatures from 0 to 50 °C, matching common control-cabinet conditions. The logic section draws only 1.5 mA at 24 VDC, so even a string of modules places minimal load on the power rail. Low current, together with the twin pass-through connectors, helps keep wiring simple when multiple units are chained.
Frequently Asked Questions about 4E0020.01-090:
Q: How many keys are present on the 4E0020.01-090 keypad?
A: The keypad of the 4E0020.01-090 module features a total of 16 short-stroke keys.
Q: How many LEDs are included in the 4E0020.01-090 panel accessory?
A: The 4E0020.01-090 accessory is equipped with 4 yellow LEDs for visual indication.
Q: What is the maximum number of 4E0020.01-090 modules that can be daisy chained?
A: Up to seven 4E0020.01-090 keypad modules can be connected in a daisy chain configuration.
Q: What is the operating temperature range for the 4E0020.01-090?
A: The 4E0020.01-090 operates reliably in ambient temperatures from 0 to 50 °C.
Q: What type of connectors does the 4E0020.01-090 module have?
A: The 4E0020.01-090 uses 2 female connectors for electrical connections.
