ES-7516 Rev.10

B3FP

Space-saving Two-wire Signal
Conditioners B3-UNIT

FREQUENCY TRANSMITTER

(field-configurable)
Functions & Features
• Converts the output from a pulse-type transducer
into a 4 – 20 mA DC signal
• DIP switch configurable input range
• Monitor terminals
• High-density mounting

MODEL: B3FP[1]

ORDERING INFORMATION

• Code number: B3FP[1]
Specify a code from below for [1].
  (e.g. B3FP/UL/Q)
• Specify the specification for option code /Q
  (e.g. /C01)

• Orders will be shipped with default factory settings as shown below.
• Factory default setting:
  Input type: Voltage pulse
  Frequency range: 0 – 1000 Hz
  Pulse amplitude: 5 Vp-p
  DC offset: 2.5 V
  Pulse sensing: DC coupled
  Noise filter: None
  Detecting level: High (2 V)

INPUT – Field-selectable

Open collector
Voltage pulse
Two-wire current pulse

[1] OPTIONS (multiple selections)

Standards & Approvals
blank: CE marking
/UL: UL approval, CE marking
Other Options
blank: none
/Q: Option other than the above (specify the specification)

SPECIFICATIONS OF OPTION: Q

COATING (For the detail, refer to our web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating (UL not available)

GENERAL SPECIFICATIONS

Construction: Small-sized front terminal structure
Connection: Euro type connector terminal
(applicable wire size: 0.2 to 2.5 mm2, stripped length 8 mm)
Housing material: Flame-resistant resin (gray)
Isolation: Input to output
DIP/rotary switches: For input calibration
(Refer to the instruction manual)
Noise filter: Chattering protection filter selectable with DIP switches (time constant 1 msec.)
Pulse sensing: DC coupled or capacitor coupled selectable with DIP SW

INPUT SPECIFICATIONS

Measurable frequencies: 0 – 0.01 Hz through 100 kHz; Sine waves with frequencies lower than 0.1 Hz cannot be detected with capacitor coupling.
Pulse width time requirement: Min. 4 μsec. for both H and L levels
DC offset: Selectable within the maximum voltage for respective pulse amplitude setting.
(e.g. For the amplitude 2 Vp-p with the maximum voltage 10 V, DC offset can be as low as -9 V and as high as +9 V.)
Frequency offset: Selectable up to 50 % of the full-scale frequency.
■ Open Collector
Sensing voltage/current: Approx. 2.5 V DC @  1mA
Detecting levels: ≤ 750 Ω / 0.7 V for ON;
≥ 3.0 kΩ / 1.3 V for OFF
■ Voltage Pulse
Waveform: Square or sine
Input impedance: 10 kΩ min.
Input amplitude: Min. 0.1 V p-p, max. 200 Vp-p
Max. voltage between input terminals: 100 V
(Max. voltage across the input terminals: 70 V for conform with EU Directive; 30 V rms, 42.4 V peak or 60 V DC for UL approval)
Detecting level: See the table below
■ Two-wire Current Pulse
Input resistance: Receiving resistor 200 Ω
Input range: 0 – 25 mA
Detecting level: See the table below
(Convert current into voltage using the receiving resistor value.)

OUTPUT SPECIFICATIONS

Output: 4 – 20 mA DC
Load resistance vs. supply voltage:
Load Resistance (Ω) = (Supply Voltage (V) – 12 (V)) ÷ 0.02 (A)     (including leadwire resistance)

INSTALLATION

Supply voltage: 12 – 45 V DC
Operating temperature:
-40 to +85°C (-40 to +185°F)
Max. 55°C (131°F) for UL approval
Operating humidity: 0 to 95 %RH (non-condensing)
Mounting: DIN rail
Weight: 80 g (2.8 oz)

PERFORMANCE in percentage of span

Accuracy: ±0.1 % (±0.3 % for frequencies below 10 Hz for sine waves detected with capacitor coupling)
Temp. coefficient: ±0.02 %/°C (±0.01 %/°F)
Response time: Max. 0.5 sec. + 1 pulse cycle (0 – 90 %)
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @1 minute
(input to output to ground)

STANDARDS & APPROVALS

EU conformity:
EMC Directive 
  EMI EN 61000-6-4
  EMS EN 61000-6-2
RoHS Directive
Approval:
UL/C-UL general safety requirements
  (UL 61010-1, CAN/CSA-C22.2 No.1010-1)

EXTERNAL VIEW

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM