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15
Chapter 2: Installation
Shaft Loading
Limit shaft loading to the following values . These values statistically yield an L10 life of 2X109 revolutions . (Statistically, only
10% of the bearings will have failed after 2X109 revolutions .) Shaft loading has an exponential effect on bearing life . The bear-
ings will statistically last longer if you can limit shaft loading below the given values .
Setting the DeviceNet Address and Bus Values
The large plug on the back of the RM-89 covers the switches that set the address of the RM-89 on the DeviceNet bus . Figure
2 .1 below shows the rear cover of the RM-89 with the plug removed .
The state of the switches is only read on power up . You must cycle power to the RM-89 before changes to the switch settings
take effect .
DeviceNet Bus Address
The bus address is set with the two rotary switches . When the RM-89 is in the orientation shown in figure 2 .1, the switch for
the “tens” digits on the left and the switch for the “ones” digit is on the right . The valid address range is 00 to 63 . Note that no
two devices on a DeviceNet network can share the same address .
• On power up, if the address has been changed to a new valid address, the RM-89 will store this address in
non-volatile memory . If the bus address switches are set later set to a value above 63, the RM-89 will use
the stored address as the address of the device .
• The RM-89 for DeviceNet ships with an address of 63 .
Table 2 .1 Suggested Shaft Loading Maximums
Radial Load
Axial Load
40 lbs . (178 N)
20 lbs . (88 N)
Figure 2 .1 Address and Bus Value Switch Locations
O
N
0
1
2 3
4
5
6
7
8
9
0
1
2 3
4
5
6
7
8
9
1
2
1
O
N
DIP SW
OFF ON
POS
ZERO
BUS
SPEED
BUS
ADDR
BUS
TERM
Bus Address
“Tens” digit
Bus Address
“Ones” digit
Summary of Contents for DeviceNet RM-89
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