Main Contents begins from here.

Support

Network Camera

Faq Contents

--- Category [External_IO]: 7 hit ---

[No.1 - No.7] / 1
No.1 What are absolute maximum ratings and electrical specifications of the External I/O ? [External_IO]
(2006/03/16)

Answer... Refer to the following tables.
 
  1. KX-HCM230 and KX-HCM270
     
    Absolute maximum ratings of External I/O
    pin no item absolute maximum ratings notes
    no2 Output current 100mA --
    no3 Input voltage max Vcc +0.5V Vcc is voltage of power output (#2 pin)
    min VGND -0.5V VGND is voltage of GND (#1 pin)
    no4 Input voltage Vcc+0.5V Vcc is voltage of power output (#2 pin)
    Output current 100mA --

    Electrical specifications of External I/O
    pin no item conditions min ave max
    no2 DC power source voltage AC100V ± 10%,during communications
    PAN/TILT ON/OFF
    12V 14V 16V
    no3 low level input voltage -- -- -- 0.3V
    high level input voltage -- 2.8V -- --
    open circuit voltage input- Open -- 2.6V --
    low level input current input voltage-0V -- -- 1.8mA
    high level input current *1 input voltage-5V -- 0.6mA --
    input voltage-3.3V -- 0.15mA --
    pull-up register value -- -- 4.7KΩ --
    no4 high level output leakage current VOH=Vcc -- -- 0.5μA
    output saturation voltage 4 pin sink current-45mA -- -- 0.25V
    *1: When input signal from external sensor is logic level
     
  2. KX-HCM10 and KX-HCM8
     
    Absolute maximum ratings of External I/O
    pin no item absolute maximum ratings notes
    no2 Output current 50mA Part? Product? that does not exceed 45mA is recommended.
    no3 Input voltage max Vcc +0.5V Vcc is voltage of power output (#2 pin)
    min VGND -0.5V VGND is voltage of GND (#1 pin)
    no4 Input voltage Vcc+0.5V Vcc is voltage of power output (#2 pin)
    Output current 50mA Part? Product? that does not exceed 45mA is recommended.

    Electrical specifications of External I/O
    pin no item conditions min ave max
    no2 DC power source voltage AC100V ± 10%,during communications
    PAN/TILT ON/OFF
    8V 10V 12V
    no3 low level input voltage -- -- 0V 0.3V
    high level input voltage -- 2.8V -- --
    open circuit voltage input- Open -- 2.6V --
    low level input current input voltage-0V -- -- 1.8mA
    high level input current *1 input voltage-5V -- 0.6mA --
    input voltage-3.3V -- 0.15mA --
    pull-up register value -- -- 4.7KΩ --
    no4 high level output leakage current VOH=Vcc -- -- 0.5μA
    output saturation voltage 4 pin sink current-45mA -- -- 0.25V
    *1: When input signal from external sensor is logic level

No.2 I intend to connect a light to the external I/O of the KX-HCM10. Is it possible to activate the light remotely, so it is turned on only when the camera is being used? [External_IO]
(2006/03/16)

Answer... Yes, an external light can be switched on and off remotely by using a relay. The Network Camera's external digital device circuitry is designed to allow a relay to be connected, and the collector signal from the NPN transistor is output as is.
When interfacing with external devices, refer to the notes below.
Click here for details of the electrical specifications of each Network Camera.
 
* Caution 1:
The maximum electrical current that can be applied to the digital output terminal of Network Cameras KX-HCM10 and KX-HCM8 is 50mA.
The maximum electrical current that can be applied to the digital output terminal of Network Cameras KX-HCM230, KX-HCM250, KX-HCM270, and KX-HCM280 is 100mA.
Select the appropriate relay and external resistor for the recommended rated current/voltage of relay and the resistance value of the coil.
 
(Example selection of electrical components for KX-HCM10)
 
• Specification of the relay
Rated voltage E1 = 6V
Rated current I1 = 33.3mA
Resistance of relay-coil R1 = 180 ohms
 
• Example of calculation for the value of external resistor R2
R2> Vcc/I1 - R1 = 10V / 33.3 mA - 180 ohms = 120 ohms and over.
PR2 = I1xI1xR2 = (33.3mA)X(33.3mA) x 120ohms = 0.13W and over.
 
Therefore, an external resistor of 120 ohms and 0.5W should be connected.
 
* Caution 2:
Consider the maximum allowable voltage of the relay. As input voltage applied to the relay (voltage of DC Power Output Terminal) varies, make sure voltage applied to the relay does not exceed its ratings.
 
* Caution 3: (Figure A)
If the voltage applied to the relay exceeds its rating, components within the Network Camera may be damaged.
 

 
* Caution 4: (Figure B)
If the rated current of the relay currently used exceeds 50 mA, you need to establish an extra external relay drive circuit as shown below.
  • Consider the condition of the transistor drive used for a relay drive, when designing a relay drive circuit.
  • On the "External Output Control" window, under "External Device Control Output", either "Open" or "Short to GND" can turn the relay on, depending on the configuration of the relay and drive circuit.
* Caution 5: (Figure B)
Please take extra care when you establish a relay drive circuit.
When you connect a relay circuit only to pin No.4 of External I/O, the external power source may reverse and be routed to inside the Network Camera, causing instability or damage to the Network Camera or its components.
 

 
* Caution 6: (Figure C)
When connecting the external devices to Network Camera using other components instead of a relay, connect an external pull-up resistor as shown below when the control input is logic input. In this case, input voltage becomes as high as 8 - 12V. Confirm the input rating of your external device and make sure it does not exceed the ratings,
 
No.3 What external switches or sensors do you recommend for connection to the External I/O? [External_IO]
(2006/03/16)
Answer... In general we recommend you to use switch-type sensors, such as door sensors (magnetic switches). When you use sensors other than switch-type sensors (which sense logic level output or open collector output), check the maximum ratings/electrical specifications of their input terminals. Make sure to select a sensor with maximum rating/electrical specifications that do not exceed the ratings of your Network Camera or sensors currently used.
 
There are two types of door sensors (NC or NO, explained below), and the settings for the signal (External Sensor Input) detected by the Network Camera will depend on which sensor you use.
 
*1: NC (Normally Closed)
The sensor is electrically closed (0 V) normally, and the sensor opens (high impedance) when triggered.
 
*2: NO (Normally Open)
The sensor is electrically open (high impedance) normally, and the sensor becomes closes (0 V) when triggered.
 
< Example >
 
Type of door sensor Door condition External Sensor Input Signal Alarm enable condition
NC “close” -› “open”   Rising: GND to Open (High), positive edge.
“open” -› “close”   Falling: Open (High) to GND, negative edge.
NO “close” -› “open”   Rising: GND to Open (High), positive edge.
“open” -› “close”   Falling: Open (High) to GND, negative edge.

No.4 What are the functions of each of the External I/O pins? [External_IO]
(2006/03/16)
Answer...
Pin Function
1 GND
2 DC Power Output Terminal
 
1) KX-HCM230 and KX-HCM270
  • 12 -16 V DC
  • Maximum load of 100 mA.
 
2) KX-HCM10 and KX-HCM8
  • 8 - 12 V DC
  • Maximum load 50 mA.
3 External Sensor Input
 
  • This is an open collector output circuit.
4 External Device Control Output
 
  • This is an open collector output circuit.
  • On the External Output Control window, you can control the external device to open or short-circuit. Refer to “Setting of External Output Control” in the Operating Instructions.
 
1) KX-HCM230, KX-250, KX-HCM270, KX-HCM280
  • The maximum draw current is 100 mA.
  • Maximum input voltage is +20 V DC.
 
2) KX-HCM10 and KX-HCM8
  • The maximum drawing-in current is 50 mA.
  • Maximum input voltage is +15 V DC.

1. The External Device Control Output and External Sensor Input are independent of each other. Signals sent from the External Sensor Input can not automatically switch the External Device Control Output.
 
2. Configure the setting outside of Network Camera, if needed.

 

No.5 Can images be transmitted from the Network Camera when the sensor is sending alarm signals? [External_IO]
(2006/03/16)
Answer... When an alarm triggers an image transfer, the Network Camera will not accept the next alarm signal until the first image transfer image is complete. Therefore, in the event that a sensor is sending a continuous alarm signal, an image transfer will not take place until the current image transfer is complete.
No.6 What is the basic procedure for connecting a sensor to the External I/O? [External_IO]
(2006/03/16)
Answer...
  1. Prepare a lead wire.
    - Type of wire: 28AWG - 22AWG
    - Wire diameter: 0.32 - 0.65mm, single wire
    - Exposed wire at the tip: 5 - 7 mm
     
  2. Press down gently on the button beside the target hole using a slim pointed tool, such as a paper clip, and insert the exposed wire into the hole. Insert the wire vertically. Be careful not to permanently bend the button by pressing it with too much force.
     
    Make sure the wire is inserted as far as it will go, to ensure proper connection.
     
  3. After the exposed wire is inserted, release the button to lock the wire in place. Pull softly on the wire to make sure it is securely locked.Pull wire gently to confirm it is secure.
Disconnecting a lead wire
  1. Press down gently on the button, pull the wire out, then release the button. Do not push the button with excessive force.

No.7 What is electric attribute and absolute maximum rating? [External_IO]
(2004/01/08)
Answer... Please refer to the following figures.

[No.1 - No.7] / 1

Banner area begins from here.