Documentation page: https://vutlan.atlassian.net/wiki/spaces/DEN/pages/2604007425/VT855i+VT855ii+Data+Center+Monitoring+Unit
Product page: https://vutlan.com/remote-monitoring-units/160-vt855i-data-center-monitoring-unit.htmlBrochure: product version 1.2
Drivers: Latest Vutlan drivers for VT855i series (VT335i, VT825i, VT855i)
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Function and purpose
The unit is used for environmental monitoring (e.g. temperature, humidity, voltage, leakage, smoke, airflow). It is also used as an I/O controller (e.g. door control, fans, generator, control panels, UPS, circuit breakers, and alarms). Can use up to 1000 different elements - notifications, triggers, timers, logic schemes, sensors, dry contacts. Has a built-in Web interface with virtual sensors, logic schemes, different types of notifications, and control panels. Has a slot for an LTE modem for an ethernet connection reservation.
Order options / Dimensions
System | Description |
|---|---|
VT855i | x1 230V AC power inlet. |
VT855ii | x2 230V AC power inlets, providing a redundant power supply for A&B power distribution. |
VT855iDC | x1 230V AC and x1 24-48V DC power inlets. |
VT855DC | x1 24-48V DC power inlet. |
VT855DCDC | x2 24-48V DC power inlets. |
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System | Diagram |
|---|---|
VT855i | .jpg?version=1&modificationDate=1643193049885&cacheVersion=1&api=v2&width=680) .jpg?version=1&modificationDate=1643193050773&cacheVersion=1&api=v2&width=680) |
VT855ii | .jpg?version=1&modificationDate=1643193052017&cacheVersion=1&api=v2&width=680) |
VT855iDC | .jpg?version=1&modificationDate=1643193054445&cacheVersion=1&api=v2&width=680) |
VT855DC | .jpg?version=1&modificationDate=1643199731543&cacheVersion=1&api=v2&width=680) |
VT855DCDC | .jpg?version=1&modificationDate=1643193052739&cacheVersion=1&api=v2&width=680) |
Physical Description
The front panel for VT855i & VT855ii:
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6. "Modem slot" - "VT740 / LTE slot modem" can be installed in this slot. This modem is ordered separately. Read instructions at "VT740 / LTE slot modem", and "LAN, GSM, LTE, RADIUS, DNS, SSL, VPN".
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10ab. Modbus port for Modbus RTU devices/meters/sensors with reading/write functionality. Read instructions in "Connecting Modbus RTU sensors to VT336 & VT336PoE", and "Configuring Modbus devices".
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Normal mode: The switch is switched to the left ←. The switch should be always in this position.
Restore of appliance: The switch is switched to the right →. Used to load the clean system image from an SD card. Read instructions at “https://vutlan.atlassian.net/wiki/spaces/DEN/pages/2417491974”.
14a. "OUTPUTS 12V 0.25A" - 12V 0.25A (for each output) terminals outputs (electronic relay). Read the instructions at "Connecting 12V devices to 12V outputs".
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21. "1-WIRE READER" - For connecting RFID reader or 1-Wire sensors. A serial communication protocol that uses a single data line plus ground reference between master and 1-Wire slave devices. Read instructions at "Connecting 1-Wire devices", "Access control", and "Setting up 1-Wire".
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24a. "RESERVE" - Reserve power inlet. 24-48V DC, 5.08mm 2EDGK power plug, 18-72VDC to 12VDC/0.84A
24b. "MAIN" - Power inlet. 24-48V DC, 5.08mm 2EDGK power plug, 18-72VDC to 12VDC/0.84A
Connection overview diagram
The front panel of VT855i & VT855ii:
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The back panel of VT855ii:
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Drawing dimensions
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Installing the device into a 19" rack
Use x3 pcs of supplied screws (M3 6mm) for each bracket to fix it on each side of the enclosure as shown in the picture below. The screws and brackets are supplied with the unit.
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Installing LTE slot modem
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Technical details
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