Rockwell Automation 193 193-5.0: Bulletin 913/592 SMP-3 Solid-State Overload Relay - Manual (Page 90)

Chapter 8 – Programming
8-2
Conversely, when a Logic Mask bit is set to “0,” the adapter
connected to the respective part is disabled.
00000X00 – Port ID #1 is disabled.
000000X0 – Port ID #2 is disabled.
00000000 – Port ID #1 and #2 are disabled
Note: If the SMP-3 HIM is disabled/masked out, the ON and
RESET buttons will be disabled and the Start/Reset Disabled
LED will be energized. The OFF/STOP buttons, however, will
still be functional
Note: To remove an adapter from an energized SMP-3
overload relay without causing a communications fault, the
corresponding bit for that adapter must be set to “0.”
ILLEGAL LOGIC MASK SETTINGS
For safety reasons, certain configurations of the logic mask
parameter will not be allowed. These conditions are:
D If either OUT A or OUT B is energized and two adapters
are connected to the SMP-3, only one adapter can be
masked out/disabled. At least one adapter must remain
enabled to ensure the outputs can be de-energized.
D If either OUT A or OUT B is energized and only one
adapter is connected to the SMP-3, that adapter can not be
masked out/disabled
Any HIM will allow the user to toggle to an illegal Logic Mask
parameter setting. However, the SMP-3 overload relay will not
allow the user to actually program the mask parameter to an
illegal setting. Rather, it will default back to the prior setting if
an illegal mask is attempted. The user should observe the
“Start/Reset Disabled” LED on the SMP-3 HIM to confirm
masking. This will help avoid an inadvertent communication
loss fault when the HIM is disconnected.
“Start/Reset Disabled” LED ON = Masked = OK to
disconnect
“Start/Reset Disabled” LED OFF = Unmasked = DO NOT
disconnect