Technical Specifications – Tree View

• Inputs & Signal Range
  • Accepts up to 2 transducers: proximity probes or magnetic pickups.
  • Input signal range: +10.0 V to -24.0 V.
  • Module limits signals exceeding this range internally.
  • Input impedance: 20 kΩ (standard), 40 kΩ (TMR), or 7.15 kΩ (internal barrier).
• Speed Measurement Range
  • Full scale range: 0 to 99,999 rpm.
  • Maximum input frequency: 20 kHz.
  • Supports 1 to 255 events per revolution (Rotor Acceleration / Zero Speed).
  • Other channel types support 0.0039 to 255 events per rev.
• RPM Accuracy & Resolution
  • Below 100 rpm: ±0.1 rpm.
  • Between 100 to 10,000 rpm: ±1 rpm.
  • Above 10,000 to 99,999 rpm: ±0.01% of true shaft speed.
  • RPM/min accuracy: ±20 rpm/min.
• Frequency Response & Low Speed Limits
  • Minimum input frequency for proximity probes: 0.0167 Hz (1 rpm with 1 event/rev).
  • Minimum input frequency for passive magnetic pickups: 3.3 Hz.
• Power & Physical Data
  • Power consumption: 5.8 watts (typical).
  • Transducer power supply: 24 Vdc, 40 mA max per channel.
  • Main board dimensions: 241.3 x 24.4 x 241.8 mm (HxWxD).
  • Main board weight: 0.82 kg (1.8 lb).
  • I/O module (non-barrier) weight: 0.20 kg. Size: 241.3 x 24.4 x 99.1 mm.
  • I/O module (internal barrier) weight: 0.46 kg. Size: 241.3 x 24.4 x 163.1 mm.
• Environmental & Immunity
  • Operates in industrial panel environments.
  • cNRTLus approval for Class 1, Division 2 (hazardous locations).
  • No external barriers needed for basic noise immunity.

Installation Guide

• Requires one full-height front slot for the monitor module.
• Requires one full-height rear slot for the I/O module.
• Not compatible with any version of 3500/20 rack.
• Use firmware 3500/50M revision 5.30 or later.
• Need 3500/22M firmware rev 1.70 and 3500 configuration software v4.20 or newer.
• Also requires 3500/02 data acquisition software v2.52 or later.
• And 3500/03 display software v1.52 or later.

Package Contents (No certificates, no warranty, no shipping info)

• 1 x 3500/50M-01-01 monitor module (main board)
• 1 x I/O module type 01 (internal terminations, non-barrier or barrier as ordered)
• No transducers or cables included

Common FAQs – Practical Answers

• Can I use a magnetic pickup with this 3500/50M-01-01?Yes. The module accepts passive magnetic pickups. Minimum input frequency is 3.3 Hz.
• What happens if my input signal exceeds +10V or -24V?The module limits it internally. No damage occurs to the unit.
• Does this tachometer work with the old 3500/20 rack?No. The manufacturer states it is not compatible with any 3500/20 version.
• How accurate is the speed reading above 10,000 rpm?Accuracy equals ±0.01% of true shaft speed. Very precise for high-speed machines.
• What software do I need to configure the 3500/50M-01-01?You need 3500 configuration software v4.20 or later and firmware rev 5.30+.