West Control Solutions Pro-EC44 - Manual (Page 234)

Pro-EC44 2-Loop Graphical Profile Controller & Recorder
Pro-EC44 Product Manual - 59540-1 October 2013 Page 227
Recorder Configuration
If the data recorder is fitted, a recorder configuration sub-menu is added to configuration
mode. This is used to adjust the recorder parameters (recording mode, sample interval,
recording triggers and values to record).
Also refer to: Configuration Mode; and Data Recorder
Recorder Option
- Refer to Data Recorder.
Recorder Menu
If the data recorder is fitted, a recorder menu is added to the main menu. This is used to
control the recording manual recording trigger, delete recordings or to show the recorder
status. This menu is protected by a lock code.
Refer to the Recorder Menu information in the Configuration & Use section.
Also refer to: Lock Codes; Main Menu and Data Recorder
Relay
An electromechanical switch operated by a solenoid coil. Relays are used for alarms or, on-
off/time proportioning control outputs. The limited current capacity and switching cycles of the
internal relays means that they are often connected to larger external slave relays/contactors
which are capable of switching much larger currents and are easily replaced once worn out.
A suitably rated RC snubber should be used to suppress noise generated as they switch
(refer to the noise suppression information in the Electrical Installation section).
Also refer to: Latching Relay; SSR Driver; Time Proportioning Control and Triac
Remote Setpoint (RSP)
The alternate setpoint type can be configured as a
“remote” setpoint, where an analogue
VDC or mADC signal applied to the 2
nd
input or auxiliary input A sets the controller setpoint
value. The signal can be scaled to give the desired setpoint values at the inputs’ minimum &
maximum values, but the setpoint is always constrained by the setpoint limits. This method
can also be used for cascade or multi-zone slaves.
Also refer to: Alternate Setpoint; Auxiliary Input; Auxiliary Input Lower Limit; Auxiliary Input
Type; Auxiliary Input Upper Limit; Cascade Control; Linear Input; Local Setpoints; Master &
Slave; mADC; Setpoint and Setpoint Select; and VDC.
Retransmit Output
A linear VDC or mADC output signal proportional to the process variable or setpoint, for use
by slave controllers in multi-zone applications or external devices, such as a chart recorder or
PLCs. The output can be scaled to transmit any portion of the input or setpoint span.
Also refer to: Input Span; Linear Output; mADC; Master & Slave; PLC; Process Variable;
Retransmit Output Scale Maximum; Retransmit Scale Minimum; Setpoint and VDC.
Retransmit Output Scale Maximum
Scales a linear output if it has been selected to retransmit a process or setpoint value.
Retransmit scale maximum defines the point at which the output will be at its maximum
value. E.g. for a 0 to 5V output, it is the PV or SP value corresponding to 5V. If this
parameter is set to less than the retransmit output scale minimum, the relationship between
the process/setpoint value and the retransmission output is reversed so that higher PV/SP
values give a lower output.
Also refer to: Process Variable; Retransmit Output; Retransmit Output Scale Minimum;
Scaled Input Upper Limit and Setpoint.