West Control Solutions Pro-EC44 - Digital Input Performance

Pro-EC44 2-Loop Graphical Profile Controller & Recorder
Pro-EC44 Product Manual - 59540-2 September 2014 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 (>5000Ω) or 2 to 24VDC signal.
Logic Low = Closed contacts (<50Ω) 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.