The Dynalogic 4 is a specialized control box primarily used for managing Dynaco high-speed doors. This electronic unit is responsible for regulating motor speed, handling safety sensors, and providing a user interface for door operation and parameter adjustments. Core Technical Specifications
The standard Dynalogic 4 unit typically includes several key hardware and performance features:
Enclosure: Often constructed from Composite ABS & PC with an IP65 rating for protection against dust and water.
Power Supply: Usually 230V single-phase (0.75 kW to 1.5 kW), operating at 50-60 Hz.
Interface: Features a foil keypad, a 7-segment display for status codes, and a main lockable rotary disconnect switch.
Safety & Inputs: Includes 10 inputs (for items like infrared barriers or wireless detectors), 2 relays, and a digital output.
ATEX Variant: An explosion-protected version is available for hazardous zones (gas or dust). Operating the Controller
The manual for the Dynalogic 4 outlines several standard procedures for daily operation and configuration: Programming & Parameters
Users can adjust operational parameters using the buttons on the foil keypad.
Enter Parameter Mode: Navigate to the desired parameter name (e.g., dynalogic 4 manual full
Edit Value: Press and release the "STOP" button to display the current value, then use the Up or Down arrows to increment or decrement it.
Save Changes: Press and hold the "STOP" button until the decimal points stop flashing to save the new setting. Setting Timers
The controller often manages automatic closing times via specialized timers:
MC/PB Timer: Typically used for manual activation like pull cords or pushbuttons.
AC/Loop Timer: Activated by motion sensors or vehicle loops.
Adjustment: These can be modified by selecting the timer button and using arrow keys to change the countdown duration. Common Maintenance & Troubleshooting
To maintain performance, the official documentation recommends regular inspections and provides code-based troubleshooting.
Error Codes: The 7-segment display will show specific codes if an alarm condition occurs. For example, if a door is above its limit, it may require checking the encoder or counterweight balance.
Resetting: After addressing a fault or an emergency stop, the system usually requires a manual reset via the keypad to resume operation. The Dynalogic 4 is a specialized control box
Safety Checks: Inspect the infrared barrier (typically 300 mm from the floor) and the wireless detectors to ensure they are triggering correctly. Manual Resources & Documentation
Full technical documentation and parameter guides for the Dynalogic 4 are often restricted to authorized partners, but can be found through professional portals:
Parameter Guide V1.6: Available on Scribd, detailing all input and output settings.
User Manual: Digital versions such as the Dynaco Dynalogic 4 User Manual cover installation, commissioning, and maintenance.
The 5.25" disks used are double-density, double-sided, but the Dynalogic 4 uses only one side unless you flip the disk manually. Side B access requires ejecting, flipping, reinserting.
Write-protect:
Known issue (firmware rev 2.0 and earlier): If you write-protect a disk and insert it during boot, the system may hang for 45 seconds. Wait.
Flipping through the "Dynalogic 4 manual full," I realized two things.
First, the engineers at Dynalogic were brilliant. The manual explains how to daisy-chain their proprietary "Dynabus" network—local area networking in 1982. There are chapters on multi-tasking that read like science fiction for the time. Volume IV: Communications & Auto-Dialer
Second, we are spoiled today. Modern manuals (if they exist) are PDFs. The D4 manual assumes you are a professional. It includes logic gates, memory maps, and a section titled "What to do when the beep code isn't in the appendix."
Once you have the PDF or binder, here is the workflow to get a dead machine operational:
The 6809’s video memory is non-linear — mapped as 64x16 tiles, each tile = 8x8 pixels.
To draw a pixel (BASIC-4 example):
10 REM Dynalogic 4 pixel plot
20 VPOKE &H2000 + (Y*64) + (X/8), PEEK(&H2000 + ...) OR (128 >> (X MOD 8))
Yes, it is slow. Use block fills (LINE, BOX, CIRCLE commands) for anything serious.
If you stumble across a listing on eBay or a vintage computer forum, you need to know what the genuine article looks like. Beware of photocopied excerpts or user guides from other Dynalogic peripherals (they made a famous 300/1200 baud modem).
A legitimate Dynalogic 4 manual full set will have:
If the manual lacks the diagnostic flowchart section (usually a large fold-out sheet), it is not the "full" version.