Access Control Wiring and Setup for the Reader

Atlas SY-777  terminals can be used to unlock an attached door when authorized employees perform an Access Control punch. Access control is compatible with readers using the direct connect and modem connection methods. The requirements below must be met in order for Access Control to function properly..

 

InfiniTime Software Requirements

 

 

 

Access Control Wiring: Hardware Components

 

Hardware requirements vary based upon the type of electronic door strike chosen and wiring configuration desired. Many professionals with experience with electronics and electrical circuitry may wish to design a custom circuit to suit their environment and equipment. A basic custom wiring diagram is included for reference for professionals who wish to design their own circuitry. For users who are uncomfortable with designing their own circuitry Inception Technologies offers the SY-124 External Relay which can be used to safely isolate the hardware terminal from contact with high voltage circuitry. An external power supply is required to provide power to the door strike. The SY-777 terminal has dry relay contacts which simply close or open the circuit allowing current to pass when activated. The readers do not provide power to the relay contacts.

 

For those unfamiliar with the electrical parts contained in the diagrams below it is important to understand their basic operation before attempting to purchase and configure the equipment necessary to lock and unlock a door with the InfiniTime Application. The central part used in the diagrams below is referred to as a relay. A relay can be thought of as an electrical switch. A coil of wire, a common contact, a normally closed (NC) contact, and a normally open (NO) contact are the four basic parts that comprise a relay. A diagram is shown below to illustrate the operation of a relay.

 

 

 

In the normal state, or when unpowered, the relay coil is not energized and the relay contacts are in their normal state. In the normal state the normally open contacts are open and the normally closed contacts are closed as the name suggests. When activated the coil becomes energized forming a magnetic field which causes the relay contacts to close or open respectively. This is referred to as the picked state where power is applied to the relay and the relay coil is energized. The relay will make a small clicking sound when it is picked. The relay contacts will switch their state, the normally open contact will be closed and the normally closed contact will be open. The contacts will remain in this position until power to the coil is removed at which point the contacts will revert to their normal state. The InfiniTime Application controls the duration for which the relay is picked. Generally when using access control the wiring is setup in order to open the door when the relay is picked. The diagrams below provide example wiring circuits for door control based upon the voltage and current requirements of the door strike in use.  Inception Technologies takes no responsibility for the wiring and setup of Access Control equipment. Customers attempting to wire their own access control devices without the assistance of a professional electrician do so at their own risk. Inception Technologies is not responsible for damage to equipment caused by improper wiring.

 

WARNING: The internal relay is rated to withstand a voltage range of 0 to 24V DC and a current load of up to 1A. Using an external power supply of more than 24 VDC will damage internal components of the Atlast SY-777 terminal. To prevent damage to the terminal, the door strike should not draw more than 1A current. An external relay must be used to separate the clock from high voltage / current circuitry.

 

 

Access Control Connection - High Voltage / Current Door Strike: Using SY-124

 

 

This diagram depicts the proper wiring of the SY-124 External Relay for use with an electronic door strike. The SY-124 External relay is intended for those who do not wish to design their own circuitry for use with an access control system. This diagram contains four major parts, the relay inside of the Atlast SY-777 (A), A connection box used to simplify the wiring (B), The SY-124 Relay Contacts (C), and the door strike with power adapter (D).

 

It is important to keep in mind the electrical specifications for the Internal Relay (A) of the Atlas SY-777 and its operation. When the door is scheduled to be unlocked the normally open contacts on the Atlas terminal will close, causing the SY-124 to pick the relay which causes the door to unlock. The 6V DC power adapter provided with the SY-124 must be connected to the SY-124 and plugged in, as it provides the power necessary to energize the relay coils and pick the relay as explained in the previous section.

 

The connection box (B) is used to simplify the wiring between the SY-124 External Relay and the Internal Relays on the Atlas terminal. Connect a wire from the Normally Open Contact of Relay 1 within the SY-777 terminal to the Orange wire of the connection box. Similarly a wire must be connected from the Common Contact of Relay One to the Brown wire of the connection box. A straight through ethernet cable must be run from the RJ45 of the connection box to the Relay Control port of the SY-124. The orange wire is connected inside of the connection box to pin seven (7) of the straight through ethernet cable, while the brown wire is connected to pin two (2) of the straight through ethernet cable.

 

The SY-124 External Relay Contacts (C) provide the final connection between the door strike and a high voltage power source. It is important to keep in mind the electrical specifications for the External SY-124 Relay contacts when connecting a high voltage power source. The SY-124 Relay Contacts are rated for 115V AC at a current of 10A. The circuit connected to the contacts of the SY-124 should not exceed these voltage or current values. For your own safety, when wiring the door strike and power source into the SY-124 ensure the AC power source of the door strike and the DC power source of the SY-124 are turned off or unplugged. It will be necessary to remove the screws from the SY-124 and open the cover to expose the contact terminals. The contact terminals are of a screw down type, simply insert the wire into the slot of the connector and tighten the screw around the wire.

 

The Door Strike and AC Power Source assembly (D) are the final parts of the assembly. The power source should be placed in a safe and dry location.

 

Access Control Connection - High Voltage / Current Door Strike: Custom Wiring

 

 

This diagram depicts an example of custom wiring for use with an electronic door strike. This diagram contains three major parts, the relay inside of the Atlast SY-777 terminal (A), a DC power supply (B), and the door strike with power adapter (C).

 

It is important to keep in mind the electrical specifications for the Internal Relay (A) of the Atlas SY-777 terminal and its operation. When the door is scheduled to be unlocked the normally open contacts on the Atlas SY-777 terminal will close, picking the relay which causes the door to unlock.

 

The 5V DC power adapter (B) should be connected directly to one end of the relay coil and the Normally Open Contact of Relay 1 within the InfiniTime Atlas terminal. The Common Contact of Relay 1 within the Atlas terminal must also be connected to the other side of the relay coil. In this way the relay coil will energize when the circuit is closed by the Odyssey or Orion terminal at the appointed time.

 

The Relay Contacts (C) provide the final connection between the door strike and a high voltage power source. It is important to keep in mind the electrical specifications for the Relay contacts when connecting a high voltage power source. The voltage and current rating of the relay contacts are dependant upon the relay's construction and model. Refer to the data sheet provided by the relay's manufacturer for this information. The circuit connected to the contacts of the relay should not exceed these voltage or current values. For your own safety, when wiring the door strike and power source into the relay contacts ensure the AC power source of the door strike and the DC power source used to energize the relay coil are turned off or unplugged. Standard procedure and safety guidelines dictate that all high voltage wiring must be safely enclosed. All measures must be taken to prevent inadvertent electrical shock. Inception Technologies is not responsible for any damages or injuries incurred while attempting to design and wire customized circuitry for these devices. It is recommended a professional electrician perform these tasks.

 

Access Control Wiring Troubleshooting Procedure

 

Basic troubleshooting steps and failure points are listed below for the diagrams above.

 

If the door does not unlock as expected first test the wiring at the Internal Relays by shorting the wires connected to the Normally Open and Common contacts of the SY-777 internal relay together. Ensure all power supplies are plugged in or turned on. The door should unlock. If the door does unlock check the following items:

 

Custom Wiring Diagram:

 

SY-124 Diagram: