Banner DF-G3 Long Range Expert, Instruction Manual, Page: 12 / 36

3. If the fiber optic array is contaminated enough that the auto compensation tracking algorithm cannot sufficiently adjust the
thresholds to ensure reliable detection
4. If the fiber optic array is blocked for more than 2 seconds
Return the system to normal operation by cleaning the fiber optic array and performing a Window SET to reset the clear-state light level
(see Window SET on page 19).
Complementary Programming
When CH2 is selected for Comp (Complementary) operation, its output always switches to the opposite state of CH1.
3.2.2 TEACH Selection
The DF-G3 can be programmed for one of the following TEACH/SET methods:
• Two-Point TEACH
• Dynamic TEACH
• Window SET
• Light SET
• Dark SET
• Calibration SET
Note: A TEACH Selection must be selected by programming before TEACH/SET methods can be used.
3.2.3 Response Speed
The DF-G3 can be programmed for one of the following Response Speeds:
Description Response
Speed
Repetition Period Repeatability Cross-Talk
Avoidance
Energy Efficient Light
Resistance
Maximum Range,
Red3
Maximum Range,
IR8504
High Speed 500 µs 100 µs 100 µs No No 1200 mm 2400 mm
Fast 1000 µs 100 µs 150 µs Yes No 1500 mm 3000 mm
Standard 2 ms 100 µs 180 µs Yes Yes 1500 mm 3000 mm
Long Range 8 ms 100 µs 180 µs Yes Yes 1950 mm 3900 mm
Extra Long Range 24 ms 100 µs 180 µs Yes Yes 3000 mm 6000 mm
3.2.4 Offset Percent
The Offset Percent is used during the Window, Light, or Dark SET methods. The threshold(s) are positioned a programmable % offset
from the taught condition.
The allowable range is 5% minimum to 95% maximum for all response speeds.
The offset percent can also be programmed to Minimum Offset . This allows the DF-G3 to set the threshold(s) as close
as possible to the presented condition, but still provide for reliable sensing.
Note: Offset Percent MUST be programmed to Minimum Offset for Dark SET to accept conditions of no signal (0 counts).
3.2.5 Auto Thresholds
Auto Thresholds can be programmed to be ON/OFF. The Auto Thresholds algorithm continuously tracks slow changes in the taught
condition(s), and optimizes the threshold(s) to provide for reliable sensing. For Two-Point and Dynamic TEACH, the algorithm optimizes
the threshold to be centered between the light and dark conditions. For Window, Light, and Dark SET, the algorithm optimizes the
threshold(s) to maintain the programmed Offset Percent from the taught condition.
• After programming Auto Thresholds to ON, it is highly recommended to re-perform the TEACH/SET method
• Manual Adjustments are disabled when Auto Thresholds are ON
• Auto Thresholds are automatically disabled in Calibration SET (see Calibration SET on page 23)
• Severe contamination/changes in the taught condition can prevent the Auto Thresholds algorithm from optimizing the
threshold(s). If this occurs, the DF-G3 enters a Threshold Alert or Threshold Error state. See Troubleshooting on page 25 for
more explanation.
3 Excess gain = 1 (high
sensitivity), opposed mode sensing. PIT46U plastic fiber used for visible LED models.
4 Excess gain = 1 (high
sensitivity), opposed mode sensing. IT.83.3ST5M6 glass fiber used for IR models.
DF-G3 Long Range Expert
™
Dual Display Fiber Amplifier
12 www.bannerengineering.com - Tel: 763.544.3164