Chapter 5—System Configuration and Operation
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
93
Solenoid Valve Operation Mode
The Solenoid Valve operation mode accepts energize/
de-energize commands to open/close a solenoid controlled
valve. The control can be adapted to both normally open &
normally closed valves. An energize command will activate
the Output 1. A de-energize command will de-activate
Output 1. Limit switches can be used to provide feedback to
the C445 indicating when the valve reaches open/closed
positions.
Solenoid parameters:
●
Solenoid Non-energized state
●
Solenoid Open Delay
●
Solenoid Close Delay
In this mode, inputs can used to provide feedback on when
the valve reaches the open/closed positions. If this feedback
is provided, C445 will issue a control fault if the commanded
state does not match the feedback signal. The parameter
“Feedback Signal Source” selects where the inputs are
wired to the C445. Options include the Base Control Module,
the Control User Interface or to a controller where they are
sent to the C445 via a communication network. For all three
locations these input feedback signals may be wired, the
actual input or bit is pre-defined for each as follows.
●
0 – No Feedback Source
●
1 – Base Control Module: Input 2 (open), Input 3 (closed)
●
2 – Control User Interface (C445UC..): Input 2 (open),
Input 3 (closed)
●
3 – Input Register 602 from a controller: Bit 1 (open)
and Bit 2 (closed)
The C445 will issue a control fault when:
●
Both closed and open feedback is detected
Normally closed valve
●
An Energize command is active and no open feedback is
detected
●
A De-energize command is active and no closed feedback
is detected
Normally open valve
●
An Energize command is active and no closed feedback is
detected
●
A De-energize command is active and no open feedback is
detected
Output 1 will be de-activated when the C445 experiences a
fault/inhibit condition.
Output 1 – solenoid coil (NO)
Output 2 – open for user configuration and their function can
be selected by the user.
Output 3 – open for user configuration and their function can
be selected by the user.
Figure 93. Timing Diagram for the Solenoid Valve
Operation Mode
Recommended User Interface Options for the
Solenoid Valve Operation Mode
Figure 94. C445UM: Monitoring User Interface
The Monitoring User Interface can be used with any
operation mode. If selected as a local control source, the
User Interface Start and Stop buttons are enabled in Solenoid
Valve Mode. Users may optionally disable local start or reset
functionality if desired.
C445UM may still be used in Solenoid Valve if the User
Interface is not the local control source. Start, Stop and Auto
buttons will be disabled. If pressed, the screen will notify the
user that this functionality is not enabled. Control Status
LEDs indicating running, stopped and Auto status will still
function.
ENERGIZE
*Control Fault delay
Timing Diagram
DE-ENERGIZE
*Normal state = Closed
De-energize to energize transition (open delay active)
Energize to de-energize transition (close delay active)
*Normal state = Open
De-energize to energize transition (close delay active)
Energize to de-energize transition (open delay active)
