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.html
Brochure: product version 1.2
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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, 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 |
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| VT855ii | .jpg?version=1&modificationDate=1643193052017&cacheVersion=1&api=v2&width=800) |
| VT855iDC | .jpg?version=1&modificationDate=1643193054445&cacheVersion=1&api=v2&width=800) |
| VT855DC |
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| VT855DCDC | .jpg?version=1&modificationDate=1643193052739&cacheVersion=1&api=v2&width=800) |
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Physical Description
The front panel for VT855i & VT855ii:
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5. "LAN port" - Ethernet 10/100 Base-T port, provides an Ethernet connection. Read more in this section "LAN, GSM, LTE, RADIUS, DNS, SSL, VPN".
- "Orange LED" - orange LED for Ethernet port. It shows network traffic.
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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", "LAN, GSM, LTE, RADIUS, DNS, SSL, VPN".
7. USB ports are needed for USB camera recording, USB Flash for system logs, and system restoration. Read instructions at "Connecting USB camera", "USB camera settings. How to save a video", "Saving system logs on USB flash drive", "USB upgrade or restore of default settings".
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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:
The back panel of VT855ii:
Drawing dimensions
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.
Installing LTE slot modem
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Technical details
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