Description
The 3500/50M Tachometer Module is a 2-channel module that accepts input from proximity probes or magnetic pickups to determine shaft rotative speed, rotor acceleration, or rotor direction. The module compares these measurements against user-programmable alarm setpoints and generates alarms when the setpoints are violated.
The Tachometer Module is programmed using the 3500 Rack Configuration software. The following configuration options are available:
l Speed Monitoring, Setpoint Alarming and Speed Band Alarming
l Speed Monitoring, Setpoint Alarming and Zero Speed Notification
l Speed Monitoring, Setpoint Alarming and Rotor Acceleration Alarming
l Speed Monitoring, Setpoint Alarming and Reverse Rotation Notification
The 3500/50M Tachometer Module can be configured to supply conditioned Keyphasor signals to the backplane of the 3500 rack for use by other monitors. Therefore, you don't need a separate Keyphasor module in the rack.
The 3500/50M Tachometer Module has a peak hold feature that stores the highest speed, the highest reverse speed, or the number of reverse
rotations that the machine has reached. You can reset the peak values.
Bently Nevada offers an Overspeed Protection System (Product 3701/55).
Ordering Information
For the detailed listing of country and product specific approvals, refer to the Approvals QuickReferenceGuide(108M1756) available from Bently.com.
3500/50M Tachometer Module
3500/50-AA-BB
A: I/O Module Type
01 I/O Module with Internal Terminations
02 I/O Module with External Terminations
04 I/O Module with Internal Barriers and Internal Terminations
B: Hazardous Area Approval Option
00 None
01 CSA/NRTL/C (Class 1, Division 2)
02 ATEX/IECEx/CSA (Class 1, Zone 2)
External Termination (ET) Blocks
Part Number Description
125808-05 Tachometer ET Block Euro Style connectors
128015-05 Tachometer ET Block Terminal Strip connectors
128702-01 Recorder ET Block Euro Style connectors
128710-01 Recorder ET Block Terminal Strip connectors
Cables
3500 Tachometer Signal to ET Block Cable
135101-AAAA-BB
A: I/O Cable Length
0005 5 feet (1.5 metres)
0007 7 feet (2.1 metres)
0010 10 feet (3.0 metres)
0025 25 feet (7.6 metres)
0050 50 feet (15.2 metres)
0100 100 feet (30.5 metres)
B: Assembly Instructions
01 Not Assembled
02 Assembled
3500 Recorder Output to ET Block Cable
129529-AAAA-BB
A: I/O Cable Length
0005 5 feet (1.5 metres)
0007 7 feet (2.1 metres)
0010 10 feet (3.0 metres)
0025 25 feet (7.6 metres)
0050 50 feet (15.2 metres)
0100 100 feet (30.5 metres)
B: Assembly Instructions
01 Not Assembled
02 Assembled
Spares
Part Number Description
288062-02 3500/50M Tachometer Module
133442-01 I/O Module with Internal Terminations
136703-01 Discrete Internal Barrier I/O Module with Internal Terminations
133434-01 I/O Module with External Terminations
133450-01 TMR I/O Module with External Terminations
134938 3500/50M Tachometer User Guide
04425545 Grounding Wrist Strap Single use only
00580434 Connector Header Internal Termination 8-position| Green
00580436 Connector Header Internal Termination 6-position Green
00502133 Connector Header Internal Termination 12-position Blue
