Bernecker + Rainer 4MP181.0843-03, User Manual

Page: 29 / 160

Technical Data • Individual Components
Chap
ter 2
Tec
hni
cal
Data
29 Mobile Panel User's Manual V 1.5
Softkeys
Softkeys are keys that are arranged in the immediate area of the display and refer a to function
shown on the display beside the key (for example, in the form of an ICON). Additionally, softkeys
have no legend sheets.
System Keys
Keys such as number block keys, cursor block keys, special keys for Window function or letter
block keys are labeled as system keys.
3.1.3 Entry Devices
As standard, the operating unit has an E-stop button and a key switch.
E-stop Button
• 2 N.C. (2-channel)
• Pre-emptive contacts
• Protected against overload according to EN 418
• Protection against blocking
• Removal by 1/4 turning of the tappet
• Housing protection IP65 according to IEC60529
For more detailed technical data on the E-stop button and its switching element see section "E-
stop button", on page 145.
Key Switch
Each restart after an emergency stop must be acknowledged by the key switch. This rules out
bypassing of this acknowledgement. In addition, the key switch must be used for
acknowledgement each time the Mobile Panel is started.
For example, this provides protection against unexpected restarts and protection against restarts
after power fails and is restored.
• Key function, 1 N.O.
• Key can only be removed in 0 position
• IP65 housing according to IEC60529
For more detailed technical data on the key switch and its switching element see section "Key
Switch", on page 146.
See section "Connection Examples for the E-stop and Key Switch", on page 86 for a connection
example for the E-Stop button and the key switch using a recommended monitoring device.