Encoder Interface - Omron FHV7H-C004-H19-MC Hardware Setup Manual

6 I/O Interface
6-2

Encoder Interface

Encoder interface (line driver type) is supported only FH-2000/FH-5000 series.
6-2-1
FH-2000/FH-5000 Series
Precautions for Safe Use
• Check the following again before turning on the power.
Are the voltage value and polarity of the power supply that is provided to the encoder cable
(ENC0 VDD/GND, ENC1 VDD/GND) correct? (5 VDC)
• Use only the cables designed specifically for the product. Use of other products may result in
malfunction or damage of the product.
• Always turn OFF the power of the FH-L series Sensor Controller and peripheral devices be-
fore connecting or disconnecting a camera or cable. Connecting the cable with power sup-
plied may result in damage of the camera or peripheral devices.
• Since cables to which bending is frequently applied is easily broken, use the robotic cable
type (bending resistant cable) to prevent damages.
• Do not apply torsion stress to cables. If not, it may cause damage to cables.
• Secure the minimum bending radius of cables. If not, it may cause damage to cables.
Precautions for Correct Use
• Check the following items on the communications cables that are used in the network.
- Are there any breaks?
- Are there any shorts?
- Are there any connector problems?
• When you connect the cable to the communications connectors on devices, firmly insert the
communications cable connector until it locks in place.
• Do not lay the communications cables together with high-voltage lines.
• Do not lay the communications cable near devices that generate noise.
• Do not lay the communications cables in locations subject to high temperatures or high hu-
midity.
• Do not lay the communications cables in locations subject to excessive dirt and dust or to oil
mist or other contaminants.
Interface Specification
Item
Input voltage
Input impedance
Differential input voltage
Hysteresis voltage
Maximum response frequency
*2
*1. Value when the terminal resistance function is used.
*2. Use this interface as paying attention to the cable length and response frequency of the encoder used.
6-30
Input voltage: 5 VDC ±5 %, Signal level: EIA Standard, RS-422-A line driver
level
*1 120 Ω ±5 %
High-level input voltage: 0.1 V
Low-level input voltage: -0.1 V
60 mV
Phase A/B/Z: 1 MHz
(When using an I/O cable, model FH-VR 1.5M)
Specifications
FH Series Vision System Hardware Setup Manual (Z366-E1)