Rockwell Automation 1440-SPD02-01RB XM-220 Dual Speed Module - Manual (Page 58)

Publication GMSI10-UM004B-EN-P - May 2010
50 Configuration Parameters
Alarm Parameters The Alarm parameters control the operation of the alarms (alert and danger
level) and provide alarm status. The XM-220 provides a total of eight alarms.
Each alarm is permanently associated with a corresponding measurement (for
example, Channel 1 Speed alarm, Channel 2 Acceleration alarm, and so on).
Use the parameters to configure which measurement the alarm is associated
with, as well as the behavior of the alarm.
Trigger Threshold The signal level to be used as the trigger value when
in Manual Trigger mode. Enter a value from +16 to -16 volts dc.
Note: This value is not used in Auto
Trigger mode.
Trigger Slope The input signal slope to be used as the trigger
value. Options: Positive
Negative
Pulses per Revolution The number of tachometer signal pulses per
revolution of the shaft (number of gear teeth). This
setting is useful if a proximity probe located over a
gear or shaft with a multi-toothed speed sensing
surface is used to generate the input signal. Enter zero if you are not using the
tachometer channel to disable the
tachometer measurement.
Important: When Mode is set to
either "Single Redundant Channel" or
"Reverse Rotation," the Pulses per
Revolution value must be non-zero for
both Channel 1 and Channel 2.
Important: When Mode is set to
"Reverse Rotation," this value must be
the same for both Channel 1 and
Channel 2.
The input tachometer signal is multiplied by this
value to obtain the measured speed. This value must be greater than zero.
Important: When Mode is set to
"Reverse Rotation," this value must be
the same for Channel 1 and Channel 2.
Fault Time-Out The number of seconds the module should wait after
the last valid tach pulse before it indicates a
tachometer fault. Enter a value from 1 to 64 seconds.
Tachometer Parameters
Parameter Name Description Values/Comments
XM Configuration
Utility EDS File
Speed Multiplier Tach
Multiplier
Alarm Parameters
Parameter Name Description Values/Comments
Alarm (XM Serial Configuration
Utility only) Selects one of the eight XM-220 alarms. Each alarm
is associated with a particular measurement. Options: Channel 1 Speed
Channel 2 Speed
Channel 1 Acceleration
Channel 2 Acceleration
Channel 1 Zero Speed
Channel 2 Zero Speed
Channel 1 Locked Rotor
Channel 2 Locked Rotor