10
Technical data
Overhung and axial loads for motor shaft ends
Operating Instructions – Explosion-Protected MOVI-SWITCH
®
Drives
47
MOVISWITCH
®
1E
Signal level
U
OK
> U
24 V
-3 V, when drive is ready for operation
I
OK
Current for checkback max. 0.65 A, short-circuit proof
Signaling function
Output for ready signal
Checkback signal "Ready for operation" = "1": U
OK
> U
24 V
-3 V
•
With voltage present (24 V)
•
If no error was detected
•
At the end of self-testing phase (after power on)
Mass
Refer to the catalog
"Explosion-protected AC Motors EDRN80 – EDRN315"
Dimensions, dimen-
sion drawings
Output torque
Required preventive
measures
Grounding the device
In this chapter, observe the information in the operating instructions "Explosion-Pro-
tected AC Motors EDR..71 – 315, EDRN63 – 315".
10.2
Overhung and axial loads for motor shaft ends
10.2.1
Permitted overhung load
You can read the maximum permitted overhung load F
Rx
of the respective motor de-
pending on the point of force application relative to the shaft shoulder from the follow-
ing diagrams.
All overhung load diagrams depict the values for a statistical bearing service life of
40000 hours at the input side shaft end. A detailed bearing service life calculation is
available on request.
The following figure shows the point of force application of the overhung load F
Rx
at
point X.
l
x
F
A
F
Rx
3980490891
l
Length of the shaft end
x
Distance between overhung load application point and shaft shoulder
F
RX
Maximum permitted overhung load at point of force application
F
A
Maximum permitted axial load
25988670/EN – 04/2020
