Applies to: NOP-IC2, RI2M, RI4, IO168 Controllers

Summary

This article explains how to wire output signals such as door locks, sirens, door holders, or other control devices using relay outputs on Azure controller models. 

Wiring Output Signals

To wire the output signals:

1. Identify the output terminals based on the information in the table by looking at the board, finding the Terminal Block (TB) on the board.

   Model	Output Terminal Block	Notes
   BLU-IC2	TB9-TB10	(4) Form-C relays
   BLU-RI2M	TB4-TB5	(4) Form-C relays
   BLU-RI4	TB14-TB17	(8) Form-C relays
   IO168	TB7-TB10	(8) Form-C relays (expandable)

   Each relay includes:
   
   • NO (Normally Open)
   • NC (Normally Closed)
   • COM (Common)
    

2. Determine the output type:
   
   Fail-Safe Lock
   • Unlocks when power is removed
   • Used for emergency exit / fire doors
   
   Fail-Secure Lock
   • Remains locked when power is removed
   • Used for entry doors / high-security areas
    

3. Wire the relay output according to the process shown in the tables. 

   NOTE: An external power supply is required to power the peripherals devices. 
   The controller relay only switches the circuit; it does not supply power. 
   Hanwha recommends using an Access Power Controller, which provides fused, 
   supervised lock power distribution for access control systems.

   Direct to Lock
   Fail -Secure (NO)		Fail-Safe (NC)
   Connection	Wire To	Connection	Wire To
   Lock Power (+)	COM on controller relay	Lock Power (+)	COM on controller relay
   Lock (+)	NO on controller relay	Lock (+)	NC on controller relay
   Lock Power (–)	Lock (–) terminal	Lock Power (–)	Lock (–) terminal

   Azure To Power Controller Board
   Fail -Secure (NO)		Fail-Safe (NC)
   Connection	Wire To	Connection	Wire To
   Azure Controller Relay (x) COM Pin	ACM Channel (x) TRIGGER COM	Azure Controller Relay (x) COM Pin	ACM Channel (x) TRIGGER COM
   Azure Controller Relay (x) NO Pin	ACM Channel (X) TRIGGER IN	Azure Controller Relay (x) NC Pin	ACM Channel (X) TRIGGER IN
   Lock (+)	ACM (X) OUTPUT +	Lock (+)	ACM (X) OUTPUT +
   Lock (–)	ACM (X) OUTPUT –	Lock (–)	ACM (X) OUTPUT –

   
   
    

4. Assign the relay to control door strike, alarm, or other device.
    

5. Test the output activation via software or credential presentation. 

   NOTE: Do NOT power locks from the controller, use an external power supply.

6. Use an inline fuse (rated for lock draw) on the power line.
    
7. Install a flyback diode across lock terminals:
   
   o Cathode (striped end) → Lock (+)
   o Anode → Lock (–)
   
   This prevents voltage spikes that could damage relay contacts or other components.
    
8. Label each output near the terminal block for easier service.
    
9. Keep lock wiring and data wiring separated to reduce electromagnetic interference (EMI).
    
10. Mount diodes as close to the load (lock) as possible.