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█ © Brüel & Kjaer Vibro ● S1079330.002 / V04
Technical alterations reserved
EN
DANGER!
Higher contact potentials cause current levels which are extremely dangerous and can
lead to injury or even death!
The permissible levels of contact potentials are:
• Max. 50 Volts in the case of AC voltages.
UMM and TMM relay connectors support wire gauges from 16 to 28 AWG. When using ferrules, the
maximum wire size is 1 mm
2
(17 AWG).
The De-Energize to Trip (Normally Energized) relay setting will cause a relay trip
on loss of power, configuration change, or firmware download.
Relays signals to 3rd party systems must be externally bypassed when making
system changes to the VC-8000.
9.7 Rack Time Synchronization
The VC-8000 has an internal clock. The clock time is
kept internally in UTC time. The rack uses the time
setting to keep the event list and to send data to CMS.
When data is sent to CMS, it is sent in UTC time. All
conversion to local time settings are performed in
PI/CMS. The times displayed in the rack event list are
converted from UTC using the configured Time Zone
setting in the rack.
9.7.1 Choosing a Time Zone
Because the rack uses UTC time internally, you must select a Time Zone. This will allow the rack time
to display the time correctly. The time zone only affects the times shown in the VC-8000 Maintenance
software and on the touch screen display. The Time Zone setting does not affect data being sent to
CMS PI or CMS XC.
9.7.2 Time Synchronization via CMS (DAC)
If CMS is being used, the rack will synchronize its internal time to the computer (PI or XC). If you are
using a CMS PI System, the time will be synchronized with the PI Data Archive server. If you are
using CMS XC the time will be synchronized to the computer running the SETPOINT PI/XC Adapter
software.
Figure 9-17) Rack Time Synchronization
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