Speed monitor specifications, Speed input specifications, Table 21 speed input specification – Rockwell Automation T8442 Trusted TMR Speed Monitor User Manual
Page 59: Trusted, Module t8442
Trusted
TM
Module T8442
Issue 8 Apr 10
PD-T8442
59
6. Speed Monitor Specifications
The following tables apply to the interface signals existing between the T8442 Speed Monitor module
and the SIFTA and SOFTA. Refer to product descriptions PD-T8846 (SIFTA) and PD-T8891 (SOFTA)
for the specifications relative to signal field connections.
6.1. Speed Input Specifications
Parameter
Min.
Typ.
Max.
Unit Note
Speed input frequency range
Active sensor
30000
Hz
Speed input frequency range
Passive sensor
30000
Hz
Speed input duty cycle
20
80
%
Steady State
Speed input speed measurement
resolution
+/-1
RPM
Speed input accuracy
0.01
%
Of Full Scale or 1 RPM
whichever is the greater
Speed input detection threshold
dc coupled
200
mV
pk-pk
Across entire frequency
range
Table 21 Speed Input Specification