DERELL DGG 77 R-B Multifunction Tachometers

(Hardware update is in progress)

5350 RPM

General Features

DERELL DGG 446 , DGG 776 and DGG 99 series tachometers are designed with a compact structure and multifunctional features. Developed specifically for precise speed and position measurements, these devices are essential components in modern automation systems.

Basic Technical Features

Compact Dimensions: Panel depth is only 59 mm.
Display Visibility and Readability:
   DGG 44: 12 mm digit height, 4-digit display (48×48 mm)
   DGG 446: 12 mm digit height, 6-digit display (48×48 mm)
   DGG 77: 10 mm digit height, 4-digit display (72×72 mm)
   DGG 776: 10 mm digit height, 6-digit display (72×72 mm)
   DGG 99: 16 mm digit height, 6-digit display (96×96 mm)
Selectable Display Colors: You can easily track the operating status by switching between red, green, or orange display colors.

Note: The DERELL DGG-77-R-B model operates on 12-35 VDC power supply. For AC 220V or generator applications, please choose the DERELL DGG-77-R-A model.

Safety and Reliability

Isolated Power Supply and Input Circuits: Provides protection against incorrect wiring via internal circuit isolation.
Adjustable Limit Values: Prevents device or system damage due to incorrect settings by configuring maximum limit values.
Output Counter Function: Tracks output activations and provides early maintenance alerts.

Additional Features

IP66 Water and Dust Protection: Offers high durability even in tough working environments.
Dual Independent Tachometer Inputs: Enables separate measurement, differential measurement, absolute ratio, and error ratio analysis.
Peak and Bottom Hold Function: Allows detailed analysis by holding max and min speeds.
Output Delay and Hysteresis Setting: Ensures stable and controlled signal output.
Averaging and Auto Reset: Used for achieving high accuracy in measurements.

Technical Specifications

Power Supply: Available in 12-24 VDC or 100-240 VAC.
Output Types: Relay output (3 A @ 250 VAC) or transistor output (100 mA @ 30 VDC).
Frequency Range: 0.001 Hz – 100 kHz (selectable), compatible with NPN or PNP.
Prescale Setting: Adjustable between 0.001 and 99.999.

Application Areas

DERELL DGG 446 and DGG 776 series are used in industrial machinery, packaging lines, conveyor systems, and textile machines.

Installation and Commissioning Recommendations

Installation Tips:
   Follow connection instructions carefully and configure the device precisely.
   Use recommended gaskets and mounting accessories for IP66 protection.
   Ensure limit values are properly configured during initial setup.

Editor's Recommendations and Experience

Input Isolation: Input signal isolation is crucial for device safety.
Thermal Management: Additional cooling and ventilation are recommended in high-temperature conditions.
Periodic Checks: Regularly monitor the output counter under tough conditions and perform necessary maintenance.

DERELL DGG series tachometers significantly enhance your production line’s efficiency and reliability with their robust design and advanced features.

THIS PRODUCT IS DESIGNED FOR INDUSTRIAL MACHINERY AND IS EQUIPPED WITH GALVANIC ISOLATION FOR SAFE OPERATION EVEN IN PANELS WITH HIGH-INTERFERENCE DEVICES SUCH AS INVERTERS AND POWER SUPPLIES.

> DERELL DGG 77 Series User Manual (PDF)

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