Description

The 3500/50M tachometer module is a 2-channel module that accepts input from proximity probes or magnetic pickups to determine shaft speed, rotor acceleration or rotor direction. The module compares these measurements with a user-programmable alarm set point and generates an alarm if the set point is violated.

The tachometer module is programmed using 3500 rack configuration software. The configuration options available are as follows:

Speed monitoring, set point alarm and speed belt alarm

Speed monitoring, set point alarm and zero speed notification speed

Monitoring, set point alarm and rotor acceleration alarm Speed monitoring, set point alarm and reverse rotation notification

The 3500/50M tachometer module can be configured to provide an adjusted key trust to the backplane of the 3500 rack for use by other monitors. Therefore, you do not need to install a separate key phase module in the rack.

The 3500/50M tachometer module has a peak-hold function to store the maximum speed, maximum reverse speed or number of reverse rotations achieved by the machine. You can reset the peak.

Signal
Each 3500/50M Tachometer
Module accepts up to two
transducer signals from
proximity probe transducers
or magnetic pickups.
Input signal
range
+ 10.0V to 24.0V
Signals exceeding this range
are limited internally by the
module.
Input
impedance
20 k Ω (standard)
40 k Ω (TMR)
7.15 kΩ (Internal Barrier)
Power
consumption 5.8 Watts, typical
Transducers
Accepts 1 to 2 proximity
transducer signals