uB45: Frequency Input Module with Excitation Supply

Field Input: 0-50kHz frequency ranges
Host Output: 0-5V or ±5V ranges

Acromag’s microBlox^® uB Series I/O modules offer a compact, high-performance solution for interfacing sensors and field devices with data acquisition systems. uB signal conditioning modules are ideal to isolate, filter, convert and amplify a wide variety of signal types for test, measurement and control systems. Just plug uB modules into 4, 8, or 16-channel back panels in any mix for a high-density analog I/O interface. Channel-to-channel isolation provides optimal noise and surge protection from ground loops, spikes, and high common mode voltages.

The uB45 model conditions and converts a frequency field input signal to a scaled 0-5V or ±5V output. It includes a 5V excitation at the input for interface pull-up when using sensors such as magnetic pickups or contact closures. Bipolar (zero-crossing) and uni-polar (digital/TTL) signals are supported.

The uBTA carriers are used with Acromag’s microBlox® signal conditioning modules to create powerful alarms that also provide a voltage/current transmitter output. The plug-in modules offer the convenience of wireless field programming on a smartphone or tablet.

Bluetooth^® wireless technology versions enable configuration using a smart phone or tablet. Acromag’s Agility™ app, available for Android™ and iOS^® mobile devices, helps you vary input/ output ranges and scaling to your specific application. The Agility app can also set an alarm output function with a set-point limit and dead band. Other app functions include polling inputs, trending values in a shareable chart, updating calibration, and diagnostic troubleshooting.

For cost-sensitive projects, a commercial-grade version is available (-CG models). These units offer similar performance, but over a limited temperature range and lack hazloc approvals.

Back panels provide power, I/O wiring terminals, and host access to an industry-standard analog signal bus. Modules are hot-swappable without screws. Data acquisition boards can access all host I/O signals on the DB25 bus connector.

Performance Specifications

See Backpanels for additional system specifications.

Field Input

Field Range:
Fixed ranges: from 0-50KHz
User-configurable -B models: 0-50KHz
Resistance
10.4MΩ unipolar (IN+ to IN-)
10.1M bipolar (EX+ to IN-) excitation
Threshold
Bipolar (zero-crossing) ±60-85mVpk (1-50kHz) up to ±85Vpk (60V AC or 170Vp-p max.).
Unipolar (TTL) 85Vpk (170Vp-p max), 0.8V max. TTL input low, 2.3-2.7V (5-50kHz) min. TTL high.
Hysteresis: 120mVp-p bipolar/zero-crossing, 1.5V unipolar
Field Excitation: +5V/11mA supply (EX- to IN-), for interface applications requiring external pull-up.
Protection: TVS & diode clamps built-in plus additional protection on back-panel.
Common Mode Rejection: 130dB typical, 50-60Hz

Host Output

Host Range:
Fixed ranges: 0-5V DC
User-configurable -B models: ±5V
DAC Resolution: 16-bit, 0-5V: 1/26305, ±5VDC: 1/52610
Drive Current: 5V into 1KΩ minimum or 5mA max load
Response Time:
uB45-01: 160ms
uB45-02: 80ms
uB45-03: 35ms
uB45-04: 16ms
uB45-05: 8.5ms
uB45-06: 3.4ms
uB45-07: 1.6ms
uB45-B: varies by range

General

Power Consumption: 0.45W, 90mA from 5V max. with no exc. & 5mA host load, or 0.6W, 120mA from 5V w/ 10mA exc. load & 5mA host load.
Accuracy:
Better than ±0.1%. 0.05% typical
-CG models: Better than ±0.125%. 0.075% typical
Non-Linearity: Better than ±0.05%, typical
Noise: Less than 0.05% of span p-p rms
Ambient Effect: Less than ±40ppm/°C
Dimensions:
Height: 1.380” with connectors. 0.970” without
Width: 0.425”
Length: 1.425”

Environmental

Operating Temperature:
-40 to 80°C (-40° to 176°F)
-CG models: 0 to 55°C (32 to 131°F)
Storage Temperature: -40 to 85°C (-40° to 185°F)
Relative Humidity: 0 to 95% non-condensing
Power Requirement: 5V powered,10-32V power optional (requires uBDC-1 power module & backpanel)
Safety Isolation:
Field channels are individually isolated field channel-to-field channel and from the field to the host I/O bus (host group includes 5V power) for common-mode voltages up to 250V AC, or 354V DC off DC power ground, on a continuous basis (will withstand 1500VAC HIPOT/dielectric strength test for one minute without breakdown). This complies with test requirements of ANSI/ISA-82.01-1988 for voltage rating specified.
Shock and Vibration Immunity:
Conforms to:
IEC 60068-2-6: 10-500 Hz, 4G, 2 hours/axis, for sinusoidal vibration.
IEC 60068-2-64: 10-500 Hz, 4G-rms, 2 hours/axis , for random vibration.
EC 60068-2-27: 25G, 11ms half-sine, 18 shocks at 6 orientations, for mechanical shock.
Electromagnetic Compatibility (EMC) Compliance:
Minimum immunity per BS EN 61000-6-1 (2007):
CE marked, per EMC Directive 2004/108/EC. Electrostatic Discharge Immunity (ESD), per IEC 61000-4-2
Radiated Field Immunity (RFI), per IEC 61000-4-4
Electrical Fast Transient Immunity (EFT), per IEC 61000-4-4
Surge Immunity, per IEC 61000-4-5
Conducted RF Immunity (CRFI), per IEC 61000-4-6
Emissions:
Class B product with emissions per BS EN 61000-6-3 (2007+A1:2011): enclosure port, per CISPR 16
Low voltage AC mains port, per CISPR 16
Approvals:
CE compliant. RoHS Compliant
UL/cUL Class 1, Division 2, Groups ABCD
ATEX Zone 2