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Door Interlocking

Key Features
• The door interlocking system is used to control the entry of a person to a secure area such as a clean room, research lab, etc. where dust or small particles may be a problem or security is of high concern. In its simplest form, the door interlocking is composed of 2 doors that are electrically interlocked in such a way that the doors cannot be opened simultaneously. Another example of Door Interlocking is Man trap.
• The 8 Door Interlocking Terminal can handle up to 8 doors ( 16 IN/OUT switches ).Thus logic can be built up around the number maximum number of doors ( 8 ) i.e. the manner in which they need to open or close.
• The Pass-through authorization is validated by a switch or the DIT can operate in a switch-less mode.
• Spectra’s DIT800 from the Enclava series caters to this requirement of 8 Door Interlocking.
• Easy to install and configure.
• Switchless operation.
• Cost saving.

Overview

  • Door Interlocking Terminal (DIT) controls interlocking of doors 8 doors using DOTL signals. For user interface there is one switch at entry and EXIT side of a door. Buzzer and LED indicators are used to provide users with visual feedback as to when a door may be accessed. For user convenience, a green light is typically used to signify that a door is ready for access and a red light to indicate that a door is un-accessible. (Additional capability providing Digital outputs which may be utilized for up to 4 more relays controlled by the DIT)
  • Only one door may be unlocked or open at one time. Unlocking or opening one door automatically secures all other doors within the designated area. Lock relay contacts will allow low voltage red and green LEDs to be utilized for user feedback.
  • Door interlocking groups can be programmed for 8 doors. User can program interlocking groups through serial communication.
  • DIT can be used without switch in which led will indicates that user can open the door or not. Switch less operation is same as with switch except that all locks will remain open initially and will get closed if one of the doors of interlocking group is open.

Specifications -- 8 Door Interlocking Terminal

Specifications: Hardware

CPU 8 Bit Microcontroller running at 8 MHz
Program Memory 32 KBytes
Communication Serial RS232 ASCII
Door Interface 2 Switches & 2 DOTL per door
Door Control 1 Buzzer and 2 LED indicators per door
Relay Interface Relay outputs for lock : 3A @ 1 V DC
Digital Inputs 4 General Purpose Optically isolated digital inputs
Digital Outputs 2 General Purpose Relay Outputs
Watchdog Built-in watch dog supervisor
Power Less than 5 Watt
Protection Miniature Circuit Breaker (MCB) for over current protection

Specifications: DIT800

Controller 8 Door / 16 Switches
Supply requirement 13.8 V DC / 5 Amp with battery charger, provision to connect 12 V / 7.2 AH Battery
Weight 5.14 Kg
Dimensions 36.2 cm (L) x 32.5 cm (W) x 8.3 cm (D)
Key Features
• Master & Slave Configuration (Max. 8 Doors can be controlled)
• Can be interfaced with any access controller
• Door Plate with 2 LEDs to indicate Status of the door (Door Release, Door Locked)
• Programmable Interlock Logic using an External Keypad for Onsite Programming
• Buzzer O/p for DOTL, Door Force Open and emergency, fire alarms
• Integration with Fire panel-on receiving fire input from fire panel, all the lock connected to slaves in loop with master will get released

Overview

  • Master & Slave Configuration (Max. 8 Doors can be controlled)
  • Can be interfaced with any access controller
  • Door Plate with 2 LEDs to indicate Status of the door (Door Release, Door Locked)
  • Programmable Interlock Logic using an External Keypad for Onsite Programming
  • Buzzer O/p for DOTL, Door Force Open and emergency, fire alarms
  • Integration with Fire panel-on receiving fire input from fire panel, all the lock connected to slaves in loop with master will get released

Specification - Door Interlock Solution

Specifications Technical Specifications
  4 Door DIS Series 2 Door DIS
Door Release Outputs 4 o/p (Lock) 2 o/p (Lock)
Alarm Output 1 Buzzer o/p for Alarms 1 Buzzer o/p for Alarms
Control inputs Fire Fire
Control Relay Output 4 2
Expandable Up to 8 door (using Slave Controller) Not Expandable
Relay Contact Output 0.5 amp for 230 V AC /1.0 amp for 12 VDC 0.5 amp for 230 V AC /1.0 amp for 12 VDC
Supply Voltage 12 V DC 12 V DC
Current (amps) 5 Amps 2 Amps
Dimensions in mm ( W x L x D ) 390 mm (L) X 90 mm (W) X  320 mm (H) 390 mm (L) X 90 mm (W) X  320 mm (H)

DIS Facia plate (Contact Type) Technical Specification:-

Specifications Technical Specifications
LED Indication Door Open LED (Green)
Door Lock LED (Red)
Facia Plate Dimension 90mm (L) X 35mm (W) x 90mm (H)
Wall cutout Dimension 48mm (L) X 35mm (W) X 70mm (H)
Alarm Output 1 Buzzer o/p for Alarms
Input

Door Open Switch or Egress Switch