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STI-638

Pulse rate / period meter STI-638 in a wall-mounting case
Code: STI-638
  • pulse rate / period meter in wall mounted IP 67 housing
  • rotational / linear speed control
  • revolution / movement period control
  • binary outputs REL / OC
  • analogue output: active or passive, power supply output: 24V DC
  • RS-485 / Modbus RTU
  • "over" signalling when the measuring range is exceeded
  • ultra bright red, green and blue display
  • free configuration software S-Config
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Description

The STI-638 tachometers encased in a tight, wall-mounted housing (IP 67) with 6-digit, large LED display are designed to control rotational or linear speed of moving objects. The device is also able to measure frequency. As an additional advantage the device can convert the rotational / linear speed into inverse values, and to display the single revolution period or process duration. The 24V DC / 100 mA output is designed to supply measuring transducers, and the RS-485 port enables data transmission in production process monitoring systems. The REL / OC control outputs can be programmed depending on the instantaneous value of rotational speed. Additionally the counter may be equipped with analogue outputs, according to the customer selection: active current output, passive isolated current output or active voltage output. The counter may be configured with no need to open the case, by using the remote controller, the local keyboard or with free S-Config software via the RS-485 communication port.

Specification
Number of inputs
1
Input type
pulse
Input levels
low: 0...1V; high: 10...30V
Input frequency
1,5...50 kHz
Output type
depends on configuration:
relay I=1A, U=30V DC/250V AC (cosø=1)
Open Collector: I=30 mA, U=30V DC, P=100 mW
0/4...20 mA: active current, operating range 0...24 mA max., load resistance 700 Ω max., resolution 13 bit
4...20 mA: passive current, isolated, operating range 2,8...24 mA max., load resistance 600 Ω@24VDC, resolution 13 bit
0/1...5V, 0/2...10V: active voltage, operating range 0...11V max., load resistance min. 2000 Ω, resolution 13 bit
Measurement unit
revolutions per second, per minute, per hour
Measurement method
electrical, pulse
Power supply
16...35V AC, 19...50V DC
85..260V AC/DC
Display
LED, 6 x 38 mm, ultra bright (red, green, blue)
Communication Interface
RS-485 / Modbus RTU
Transmission parameters
1200...115200 bit/s, 8N1 / 8N2
Operating temperature
0...+50°C
-20…+50°C
Protection class
IP 67
Case material
ABS
polycarbonate
Mounting
wall
Case dimensions
230 x 140 x 96,5 mm