841T: DC Frequency/Pulse Input Intelligent Transmitter

841T Intelligent Transmitter with DC Frequency / Pulse Input Description

These transmitters isolate and convert sensor inputs to noise-free, proportional DC current or voltage output signals. An optional relay output adds a local limit alarm function.

Each unit offers a selection of input and output ranges, as well as several signal conditioning options. This flexibility enables a single IntelliPack to handle a broad range of applications. As your needs change, you can easily reconfigure the unit for different ranges or functions.

Setup is very easy. IntelliPack modules are quickly configured with the user-friendly Windows software program. Field adjustments are simple with the module’s front-panel push-buttons and status LEDs. Once configured, IntelliPacks operate independent of any host computer.

Performance

General Input

Resolution:
Input Range          Resolution
0 to 100Hz                     0.01Hz
0 to 1000Hz                     0.1Hz
0 to 50,000Hz                     1Hz
0 to 65,535 pulses          1 pulse

Noise Rejection: Common Mode: Better than 80dB @ 60Hz
Input Response Time (for input step change): -3dB @ 35KHz
Input Over-voltage Protection: Bipolar Transient Voltage Suppressors (TVS)

Frequency Input

Input Types: TTL, dry contact, open collector NPN/PNP, NAMUR, magnetic pickups, proximity sensors
Frequency Ranges:
0 to 100Hz
0 to 1000Hz
0 to 50,000Hz
Pulse Counter Input Range: 0 to 65535 pulses
Minimum Input Pulse Width:
Frequency inputs: 10μS
Pulse counting inputs: 5mS
Voltage Ranges:
Unipolar: 0 to 100V DC
Bipolar: ±50mV to ±100V peak
Zero/Full Scale Adjustment:
Zero and span: 100% full range adjustment
Pulse counting: Up to 65535 spans within range
Input Threshold/Hysteresis:
Bipolar:
Threshold: 0.01V, typical
Hysteresis: ±25mV or ±83mV
Unipolar:
Threshold: 1.5V or 5V
Hysteresis: ±25mV or ±83mV
Input Debounce (Event Counter): 0 to 1000mS (configurable in 5mS increments)
Frequency Excitation Supply: Selectable, +8.2V or +12V @ 15mA
Input Impedance: 35K ohms, typical

Accuracy:
Input Range           Accuracy
0 to 100Hz                  ±0.04Hz
0 to 1000Hz                  ±0.4Hz
0 to 50,000Hz                ±10Hz
0 to 65,535 pulses        ±1 pulse

Output (DC V/mA)

D/A Converter: 16-bit Σ-Δ
Current Output:
Ranges: 0-1mA, 0-20mA, 4-20mA
Compliance: 10V minimum (500 ohm load)
Accuracy: 0.025% of span
Voltage Output:
Ranges: 0-5V, 0-10V
Compliance: 10mA maximum with short circuit protection. 1 ohm output impedance
Accuracy: 0.025% of span
Accuracy (overall input to output): 0.075% of span

Output (Relay)

Relay: One SPDT electro-mechanical relay
Relay Ratings (CSA ratings):
25V DC @ 5A
120/240V AC @ 5A
Relay Time Delay: Adjustable alarm delay of up to 25 seconds
Contact Material: Silver-cadmium oxide (AgCdO)
Expected Mechanical Life: 20 million operations

Environmental

Ambient Temperature:
Operating: -25 to 70°C (-13 to 158°F)
Storage: -40 to 85°C (-40 to 185°F)
Relative Humidity: 5 to 95%
Power Requirements: 10 to 36V DC. 100mA @ 24V. 160mA @ 15V
Isolation (optical):
4-way (input/output/relay/power)
1500V AC for 60 seconds or 250V AC continuous
Radiated Field Immunity (RFI): EN61000-4-3, EN50082-1
Electromagnetic Field Immunity (EMI):
Less than ±0.25% of output span effect under the influence of electromagnetic fields from switching solenoids, commutator motors, and drill motors.
Electrical Fast Transient (EFT): EN61000-4-4, EN50082-1
Surge Withstanding Capability (SWC): EN61000-4-5, EN50082-1
Electrostatic Discharge (ESD): EN61000-4-2, EN50082-1
Radiated Emissions: EN50081-1 for Class B equipment
Approvals:
UL, cUL listed (USA, Canada)
UL3121 – general product safety

Configuration

Software Configuration: Units are fully programmable via the Windows 7 or newer IntelliPack Configuration Program. Configuration downloads from PC through EIA232 serial port using Acromag 800C-SIP kit.
Field Configuration: Output, zero/full-scale, relay setpoint and deadband are configurable via push-buttons and a standard calibrator.
LED Indicators: LEDs indicate power, status, calibration, and alarm.

Physical

Enclosure: Case: Thermoplastic UL94 V-2 NEMA Type 1 enclosure.
Connectors (Removable terminal blocks): Wire Range: AWG #14-22 (AWG #12 stranded only)
Printed Circuit Boards: Military grade FR-4 epoxy glass circuit board
Dimensions
1.05W x 4.68H x 4.35D inches
26.7W x 118.9H x 110.5D millimeters
Shipping Weight: 1 pound (0.45 Kg) packed

Additional information