Enabling Devices; Functionality - B&R Mobile Panel 40 User Manual

2.2.2 Enabling devices

The Mobile Panel is equipped with two enable switches that are arranged on both sides of the device. It allows both
left- and right-handed operation. Both enable switches are connected in parallel and have the exact safe effect on
the shared safety circuits in the attachment cable. Only one enable
consists of a three-position
dual-circuit design that spans everything from the
circuits have been implemented using various technologies and switching circuitry. The electronic design of the
switching contacts means that their service life remains independent of the load up to their rated values (resistive,
inductive and capacitive).
Enable switch elements are protected against reverse polarity. The outputs of both circuits are protected against
short circuit and overload:
• Circuit 1: Thermal protective circuit
• Circuit 2: Foldback characteristic curve

2.2.2.1 Functionality

The control element is composed of two symmetrically arranged rocker switches, the position of which is determined
using electrical sensing devices before being passed on to the evaluation electronics.
The enable switch can have three different
Switch position
1
2
3
Warning!
The enable switch
This test must be performed to determine whether the panic position is functional.
Information:
Only one enable switch
tion is in order.
Positions "Zero" and "Panic" must trigger a category 0 or 1 stop command.
2.2.2.1.1 Zero position
When not actuated, the enable
Mobile Panel 40/50 User's manual V1.80
Enable switch
Figure 4: Enabling devices
control element and separate evaluation electronics. An important feature is the uniform
switch
Function
Zero position
Enable
Panic
Table 6: Enable
wird nicht betätigt
Kanal 1 Null
Kanal 2 Null
Figure 5: Possible enable
must be tested periodically (every 6 months) by switching it to the panic position.
must be actuated for the monitoring
switch returns to the zero position (not enabled).
Enable switch
switch
control elements to the connection terminals. The evaluation
positions:
Enable switch
Not actuated
Actuated
Fully actuated
switch positions
wird betätigt wird durchgedrückt
Zustimmung Panik
Zustimmung Panik
switch positions
device
Technical data
must be enabled. The enable
Switching contact
Off (opened)
On (closed)
Off (opened)
to determine that the switch
switch
posi-
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