Document
Microphotonic Devices (Micro-displacement Sensor)
Z4D-B01
Be sure to read Precautions on page 24.
■ Dimensions
■ Features
Note: All units are in millimeters unless otherwise indicated.
• Easier control enabled by built-in processor circuit.
• Resolution: ±10 µm.
2-175489-4 (Tyco Electronics AMP)
• Operating area: 6.5±1 mm.
• Adapts well to changes in reflection factor using division pro-
cessing.
Mounting reference plane Emitter axis
5±0.05
35.5
22 16±0.05
9.8
8.4±0.3
Two,
2
+0.05 –0.15
dia.
14.5 9.2
0.4
■ Applications
• Paper thickness detection • Multi-feed detection • Travel distance detection
4.8
Two, 1 dia.
Pin no. Remarks
Name
1.2 5.8
(6.3) (1.3) 10
Center of 2.5 Detector 1.8
Mounting Hole Dimensions
16±0.2 9.1±0.2 Two, 2.3+−00.1 dia.
2-M3
5.7±0.2 5±0.2
8.2±0.2 15.7±0.2
15
11.5 Two, 3.5 dia.
8.8
(1) (2) (3) (4)
2
1 PLS
LED pulse light emission control signal
2 VCC
Power supply
3 OUT Output
4 GND Ground
Unless otherwise specified, the tolerances are as shown below.
Dimensions Tolerance
3 mm max.
±0.3
13 40±0.3
Recommended Mating Connectors: Tyco Electronics AMP
175778-4 (crimp-type connector) 173977-4 (press-fit connector)
3 < mm ≤ 6 6 < mm ≤ 10 10 < mm ≤ 18 18 < mm ≤ 30 30 < mm ≤ 50
±0.375 ±0.45 ±0.55 ±0.65 ±0.8
■ Absolute Maximum Ratings (Ta = 25°C)
Item Supply voltage LED pulse light emission control signal LED light emission pulse Operating temperature Storage temperature
Symbol VCC PLS TFP Topr Tstg
Value
Unit
7 VDC
7 VDC
100 (see note) ms
–10 to 65
°C
–25 to 80
°C
Condition --LED --No freezing or condensation ---
Note: Refer to Pulsed Forward Current Rated Curve.
■ Electrical and Optical Characteristics (Ta = –10°C to 65°C)
Item
Symbol
Rated value
Power supply voltage Current consumption Response delay time (High to Low)
VCC OUT tr
5 VDC ±10% 0.2 VDC to (VCC–0.3) V 100 µs max.
Response delay time (Low to high)
PLS
3.5 VDC to VCC
Note: 1. Load impedance (between OUT-GND) is set at more than 10 kΩ. 2. The time for output voltage to rise from 10% to 90% of the full output range.
Condition Ripple (p-p): 10 mV p-p max. (see note 1) (see note 2) ---
200 Z4D-B01 Microphotonic Devices (Micro-displacement Sensor)
■ Characteristics (Ta = –10°C to 65°C)
Object: N8.5 Munsell paper with a reflection factor of 70%.
Item Operating area (see note 1) Sensitivity variation (see note 2) Resolution (see note 3) Linearity (see note 4)
6.5 ±1 mm –1.4 mV/µm ±10% max. ±10 µm max. (Ta = 25°C) 2% F.S. (full scale) max.
Value
Note: 1. Distance from Mounting Reference Plane to Target.
2. The sensitivity is defined as slope of the line and it represents the variation in the output voltage per unit length between different products.
3. This is the value of the electrical noise width in the output signal converted to a distance under the following conditions. (1) A/D conversion time: 50 µs max. (2) Ripple noise in the power supply voltage (Vcc): 10 mVp-p max. (3) Low-pass filter time constant of the downstream signal processing circuit: 0.4 ms (4) Distance from mounting reference plane to target: 6.5 mm
4. This is the peak-to-peak value of the deviation of the signal output from a straight line. A linearity of 2% F.S. indicates the following value: (1) Distance full-scale converted value: 2 mm × 0.02 = 0.04 mm (40 µm) (2) Output voltage converted value: 1.4 mV/µm × 40 µm = 56 mV (for a sensor with a sensitivity of 1.4 mV/µm)
Output voltage (V) Sensitivity change ratio (%)
Output change ratio (%) Pulse width (tFP)
■ Engineering Data
Operating Distance Characteristics (Typical)
5
4
3
2
1
0 5.0 5.5 6.0 6.5 7.0 7.5 8.0
Operating distance (mm)
■ Circuit Diagram
Dependency of Object on Reflection Factor (Typical)
5 4 3 2 1
0
−1
−2 −3 −4
−5 0 20 40 60 80 100
Reflection factor of object (%)
Temperature Characteristics (Typical)
100 Vcc=5V
80 Distance: 6.5 mm
60
40
20
0
−20
−40
−60
−80
−100 −40
−20 0
20 40 60 80
Ambient temperature (°C)
100
Pulsed Forward Current Rated Curve
(ms) 100
Duty ratio (%)= tFP ×100 T
tFP T
10
Recommended operating area
1
0.1 0
20 40 60 80
Duty ratio (%)
PSD
I/V
Amplifier
V1 V1+V2
OUT 5V
A/D port
Output
5 PLS (LED optical signal)
0
Object
LED
ASIC Micro-displacement Sensor
PLS GND
D port Timer
Microprocessor (Reference)
Sensor output
5 0
Output voltage corresponding to the distance
The sensor output is obtained by adding a pulse signal to the PLS terminal. An output cannot be obtained merely by adding a DC voltage to the PLS terminal. The output will be a pulse output synchronized with the PLS signal. The output must be held with a latching or sample-and-hold circuit in the microprocessor.
■ Typical Application
Detecting Paper Thickness in Printers
Paper
Detecting Two Sheets of Paper
Micro-displacement Sensor
Detecting Sheet Thickness
Micro-displacement Sensor
Roller.