Omron R88M-K Series User Manual page 107

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Forward Drive Prohibition Input (POT) and Reverse Drive Prohibition Input (NOT)
These two signals are the inputs to prohibit forward and reverse rotation (over-travel inputs).
When these terminals are shorted (factory setting), the Servo Drive can rotate in the specified
direction.
In the drive prohibition state, Servomotor switches to servo lock state after a deceleration stop.
The maximum torque for a deceleration stop is the same as the maximum Servomotor torque.
In the drive prohibition state, the Servo Drive does not switch to an error state.
When the Drive Prohibition Input Selection (3504 hex) is set to 1, the operation at a drive prohibit
input can be selected in the Stop Selection for Drive Prohibition Input (3505 hex).
If the Drive Prohibition Input Selection (3504 hex) is set to 2, a Drive Prohibition Input Error (Error
No. 38.0) will occur when there is a drive prohibition input.
With the default settings, the Forward Drive Prohibition Input (POT) is allocated to pin 7, and the
Reverse Drive Prohibition Input (NOT) is allocated to pin 8.
Precautions for Correct Use
Both signals are disabled (in a state in which drive prohibition will not operation) in the default
settings. If prohibiting the drive input is required, set the Drive Prohibit Input Selection (3504
hex) to either 0 or 2. The setting on the Input Signal Selection 1 to 10 (3400 to 3409 hex) can
change the logic and allocation for the respective Input terminals (CN1 to 7 and 8).
Origin Proximity Input (DEC)
This is the deceleration signal for origin returns.
If the Origin Proximity Input turns ON while the Servomotor is traveling at the origin proximity input
search speed, it will decelerate to the Speed during search for zero (6099 hex).
With the default settings, the Origin Proximity Input is assigned to pin 9.
External Latch Input Signals (EXT1, EXT2, and EXT3)
These are the external input signals to latch the actual value in the feedback pulse counter.
The encoder position data is obtained when the External Latch Input is turned ON.
With the default settings, External Latch Input 1 is allocated to pin 12, External Latch Input 2 to pin
11, and External Latch Input 3 to pin 10.
Precautions for Correct Use
The external latch inputs are detected by on the rising edge of the signal, but the minimal signal
ON and OFF widths must be 2 ms.
The external latch inputs can only be set to NO (normally open) contacts.
The external latch inputs can be allocated to pins 10 to 12 only.
OMNUC G5-series AC Servomotors and Servo Drives User's Manual (with Built-in EtherCAT Communications)
3-1 Servo Drive Specifications
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