VT460 / Smoke, humidity, temperature sensor (v6) (legacy)

Datasheet page: https://vutlan.atlassian.net/l/cp/aJLea5p1

Product page: https://vutlan.com/can-sensors/27-vt460-smoke-humidity-and-temperature-sensor.html

Function and purpose

Smoke, humidity, and temperature sensor with high smoke sensitivity and precise temperature, and humidity measurement. The detector responds to the appearance of the smoke of the low concentration.

Physical description

From the picture above:

Temperature & humidity sensor
CAN bus ports
Pinheads (3 pins)
LED (More info in the "LEDs section" in the article: CAN devices connection)

The sensor can not be used on its own. It must be used together with Vutlan monitoring systems.

Installation procedure

Notes on assembly

It is vital to ensure that the smoke alarm is always assembled with the sensor head pointing downwards. In any other position, there is no guarantee that smoke will be detected.
The smoke alarm must also be positioned so that it is ventilated with an adequate amount of air and the ventilation slots are not covered.

Installation with the mounting plate provided

The sensor is installed using the mounting plate provided.

Uncover the smoke detector head from the base.
Attach the smoke sensor base to the mounting plate using the M4 x 10 screws provided.
Replace the sensor head onto the base and secure it by twisting it until it locks home.
Secure the mounting plate to the enclosure frame using the 4.8 x 19 screws.
Remove the red protective cap!

Drawings

Connecting sensor

Connect one end of the RJ11 / RJ12 cable to the monitoring unit CAN port and the other end to any CAN input of the smoke sensor. It is possible to connect up to 10 sensors to one CAN port. To do so connect a new RJ11 cable to a free input of an already connected smoke sensor and the other end to the next smoke sensor in a chain. See the picture below. RJ11 or RJ12 cable pinouts can be found in the picture below. After the system starts, configure the CAN bus, after configuration, the LED on the smoke detector will blink dimly once a second.

Now we need to switch TR to position OFF for all sensors except the last sensor. And switch TR to the OFF position for the last sensor.

Depending on the version of VT460, please choose the below picture to help you accomplish that.

Case	Diagram	Description

Case

Diagram

Description

1

Older VT460 sensors use a pin head jumper.

a) For all sensors except the last sensor in the chain put "pinhead jumper" on pins: 2 and 3. TR is OFF.

b) For the last sensor in the chain put "pinhead jumper" on pins: 1 and 2. TR is ON.

2

Newer VT460 sensors use a slide switch.

a) For all sensors except the last sensor in the chain switch the slide switch UP to turn up. TR is OFF.

b) For the last sensor in the chain switch the slide switch to the BOTTOM/DOWN. TR is ON.

CAN sensors and CAN units connection

Connect CAN devices to any port CAN1 or CAN2 on the monitoring system using a cable supplied. CAN sensors can also be connected to the port of another CAN sensor or CAN unit that is connected to the CAN bus. Determination of the devices and their connection is done through a web interface.

You can connect up to x32 CAN units in a CAN bus chain.

The TR should be "ON" for the last sensor on each bus "CAN 1" and "CAN 2". See section "TR" below.

This procedure applies to the following sensors, which are supported by the appliance and are connected to the CAN ports:

CAN sensors, and modules:

CAN extensions:

CAN cable and limited line length

The maximum length of the CAN line in Vutlan monitoring systems is 225 m due to limitations on the ohmic resistance of cables with RJ12 connectors.

Vutlan AWG24 cables have low resistance.

Since the conductivity of aluminum is much lower than that of copper, the resistance of CCA cables is much higher than that of pure copper cables of the same size.

It is advisable to use two or three pairs of cables such as UTP Cat3.5.6 with 24AWG with a copper core. It is possible to use a 4-wire or 6-wire TRONIC or UTP CCA cable, but the maximum CAN line length will be reduced.

TR termination switch

The last sensor TR switch on a CAN chain must always be terminated, ( switched ON ). Sensors on a CAN bus that is in the middle should have TR switched OFF.

FR should always be OFF.

TR switch is always the DP switch nearest to the CAN bus.

Only older Vutlan models have an FR switch.

pic.1.1: FR is OFF, TR is ON. pic.1.2: FR is OFF, TR is OFF.

Adding CAN modules and sensors

To connect the CAN module or CAN sensor to the CAN bus of the system, go to the interface >> CAN configuration panel >> Select the CAN1 or CAN2 tab (select the connected physical CAN1 or CAN2 port on the master module).

Click the "Configure" button and wait. The system will start CAN bus polling, soon it will display the data lines and write “Done!”. The modules and sensors connected to the CAN input will appear in a tab in the list. Click the Apply button and then Restart.

The green LED "CAN status" of the device will light up.

The CAN bus has no topology, and it's impossible to determine which sensor is connected to which.

Go to the panel "System Tree" to see the new devices or new sensors. The article numbers for CAN devices are VT4xx. If they do not appear, wait, or refresh.

If after clicking the "Configure" button the poll is reset to the phrase "Update", then the line is not connected or the terminators on the bus are not agreed. It is necessary to check and change the condition of the TR terminators (See "TR termination switch" section above) on the modules or check and possibly change the connection cables.

Warning: If the bus is not matched, that is, there are bad contacts or bad cables, or the TR terminator is in the"ON" position on the intermediate devices (position 2 on the VT408), or the line is too short for matching on both CAN end devices, CAN on this line can work malfunctioning, or the line as a whole may not function. (CAN line failure may occur if the parallel CR switch is in state 1, must be in OFF).

LEDs

CAN sensors have LEDs that indicate the following states:

Red continuous light, green flickers - no communication with the master module
Red continuous light, green is off - there is a connection with the master unit but is not included in the monitoring system (not configured)
Red is off, Green continuously light - work as part of a monitoring system
All LEDs are off: no power or sensor is defective.

Maximum cable length test

Model	Description	50m	100m	150m	200m

Model	Description	100m	150m
VT408	Sensor extension unit	ok
VT408DIN		ok
VT430	Rack control unit	ok
VT440	Dry contacts unit	ok	long-chain
VT460	Smoke, humidity, temperature	ok
VT490 / VT490i	Dual humidity and temperature sensor / Pressure, humidity & temperature sensor	ok

Additional power for long-chain

When connecting a very long chain, you need to use the CAN-12V-1A / CAN Power Supply module for additional power for CAN units/extensions/sensors every 8-12 sensors.

x2 CAN port systems

Some Vutlan main monitoring systems have x2 CAN ports. That means they can support two individual CAN chains. Each chain has to be configured individually. E.g. “VT855t / Data center monitoring unit” has x2 CAN ports.

Additional reading

Testing the smoke sensors

During system operation, take a needle or paper clip and insert it into the hole on the cover of the sensor, try to move it there until the blinking dimly LED flashes brightly. That means that the sensor is in a good state. After inspection, return the sensor /s to a normal state. To do this, either disconnect them from the system, or in a system interface, go to the smoke sensors tab, and restart them.

False alarms

Avoid high-frequency noise and the impact of dust on the sensor, the noise and dust cause false alarms.

Technical specifications

VT460

VT460
Dimensions	Ø100×45 mm
Weight	290 g
Inputs	2 x RJ-12
Operating temperature	Min. -10° C, Max.80° C
Operating humidity	Min. 5% - Max. 95% (Non-Condensing)
Power consumption	100 mW
Status Indicators	Red LED
Max. distance m	225 m
HS Code	8531 10 950
Components	Manufactured in E.U.
Special Features	Daisy chain
Mounting	On the сeiling

Safety instructions

Please observe the valid regulations for installation in the country in which the smoke alarm is installed and operated and the national regulations for accident prevention. Please also observe any internal company regulations, such as work, operating, and safety regulations.
The technical specifications and limit values stated must not be exceeded under any circumstances. In particular, this applies to the specified ambient temperature range and IP protection category.
If a higher IP protection category is required for a special application, the smoke alarm must be installed in an appropriate housing or an appropriate enclosure with the required IP protection category.

Configuring CAN sensors

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Vutlan s.r.o.

Remote Infrastructure Monitoring and Control

43 ul.Svornosti, 821 06 Bratislava,

Slovak Republic, E.U.

www.vutlan.com