Ups system requirements, Ups system requirements 43 – MTS FlexTest Models 200 User Manual
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UPS System Requirements
MTS FlexTest® Models 40/60/100/200 Controller Hardware
FlexTest Controller Configurations
43
UPS System Requirements
UPS Systems for FlexTest 60, 100, 200, and GT Controllers
To provide an increased level of safety, such as needed to address current
European Machinery Directive, any system using an FT60, FT100, FT200, or
FTGT servo controller must have an acceptable Uninterruptable Power Supply
(UPS) properly integrated into the system.
It is important to note that the UPS will not prevent any unexpected motion if the
controller, or any other electrical subsystem required for control of the system
has an internal failure, including a HPU or a Motor Drive.
UPS requirements
•
The UPS must be wired to provide power to the controller and any
peripheral equipment that is instrumental in safe system operation and shut-
down. In some cases it may be feasible and appropriate to provide UPS
power to the Hydraulic Power Unit (HPU).
•
The UPS must be sized to provide adequate electrical power for a period of
three minutes after loss of input power.
•
The controller must be configured to take appropriate actions for safe shut-
down of hydraulic equipment being controlled. (Appropriate actions depend
on the particular system.)
•
Both UPS input power and UPS output power connections must include
strain relief and a twist-lock plug or equivalent.
•
UPS systems used in the European Union must be CE marked.
•
The UPS must have input power-loss (AC Fail) alarm relay contact out and
a low battery alarm relay contact out, both of which must be wired to the
controller's UPS monitoring interface.
Battery power
considerations
A UPS with an AC Fail relay contact wired to the controller provides a
mechanism for the controller to identify that the UPS has switched over to
battery power due to a detected AC power failure condition from the facility's
power grid. This fault signal from the UPS can be used by the controller to start a
safe shutdown sequence, ramp command(s) to a safe state(s), and then shut off
the power source.
The addition of a low battery warning relay contact out from the UPS will
provide additional system safety protection by letting the controller know that the
UPS battery is low.