West Control Solutions Pro-EC44 - Manual (Page 255)

Pro-EC44 2-Loop Graphical Profile Controller & Recorder
Pro-EC44 Product Manual - 59540-1 October 2013 Page 248
Isolation: Reinforced safety isolation from outputs and inputs
Sensor Break
Detection: Applicable for 4 to 20mA, 1 to 5V and 2 to 10V ranges only.
Control goes to the pre-set power value if Auxiliary Input is providing the
active setpoint source.
Digital Inputs
Digital Input Functions
Function Logic High* Logic Low*
┌ ┐ Loop 1 Control Select Enabled Disabled
┌ ┐ Loop 2 Control Select
Enabled Disabled
┌ ┐ Loop 1 Auto/Manual Select
Automatic Manual
┌ ┐ Loop 2 Auto/Manual Select
Automatic Manual
┌ ┐ Loop 1 Setpoint Select Main SP Alternate SP
┌ ┐ Loop 2 Setpoint Select Main SP Alternate SP
┌ ┐ Loop 1 Pre-Tune Select Stop Run
┌ ┐ Loop 2 Pre-Tune Select Stop Run
┌ ┐ Loop 1 Self-Tune Select Stop Run
┌ ┐ Loop 2 Self-Tune Select Stop Run
┌ ┐ Profile Run/Hold Hold Run
┌ ┐ Profile Hold Segment Release
No Action Release
█ Profile Abort No Action Abort
█ Data Recorder Trigger Not Active Active
█ Output n Forcing Open/Close Off/Open On/Closed
█ Clear All Latched Outputs No Action Reset
█
Output n Clear Latch No Action Reset
█
Key n Mimic (for L D U R) No Action Key Pressed
█ Inputs C1-C7 can be used as
Binary or BCD Profile Selection Binary 0 Binary 1
Note: The above actions apply when a digital input is setup to control the
specified function(s), *but the High/Low function can be switched using the Inputs
to Invert selection screen.
Digital Input Performance
Number Available 0 to 9. One from Module Slot A, 8 from Multi-Digital Input C
Type: Voltage-free or TTL-compatible voltage signals.
Held in High state via pull-up resistors.
Logic States: Logic High = Open contacts (>5000
Ω) or 2 to 24VDC signal.
Logic Low = Closed contacts (<50 Ω) or -0.6 to +0.8VDC signal.
*Inverted Logic: Inputs can be inverted. This swaps the actions listed above (e.g.
Profile Aborts on Logic High if selected input is inverted).
Digital Input Sensitivity: Inputs set for: Control disable; Auto/Manual; Setpoint Select; Pre-
Tune; Self-Tune; Profile Run/Hold and Profile Hold Segment
Release are all Edge Sensitive, where a High-Low or Low-High
transition changes the function status. Pre-Tune is always off at
power on (except if using the auto pre-tune feature), but others
functions retain their power off status at power on.
Inputs set for: Profile Abort; Data Recorder Trigger; Output Forcing;
Clearing Latched Outputs; Key Mimic and Profile Selection are all
Level Sensitive, where a high or low input sets the function status.
Digital inputs generally work in parallel with equivalent menus,
where either can change the function status.
Response Time: Response within <0.25 second of signal state change.
Isolation: Reinforced safety isolation from inputs and outputs.