Watlow CLS200 - Manual (Page 129)

CLS200 Series User’s Guide Chapter 6: Enhanced Features
Doc.# 0600-3050-2000 Watlow Anafaze 113
Process Variable Retransmit
The process variable retransmit feature retransmits the
process signal of one loop (primary) via the control output
of another loop (secondary). This signal is linear and pro-
portional to the engineering units of the primary loop in-
put.
Typical uses include data logging to analog recording sys-
tems and long distance transmission of the primary signal
to avoid degradation of the primary signal. The signal can
also be used as an input to other types of control systems
such as a PLC.
Any available output (heat or cool) may be used as a re-
transmit output. Any process variable (including the same
loop number input) may be retransmitted.
The controller output signal must be connected to a Dual
DAC or Serial DAC converter to get a 4 to 20 mA
Î (dc) or
0 to 5V Î (dc) signal. The choice of converter depends on ap-
plication requirements.
The process variable retransmit feature is included in both
the ramp/soak and enhanced features options.
NOTE! If an output is defined as a process variable
retransmit, it cannot be used for PID control.
Setup Loop Process Variable Retransmit Menu
The setup parameters for the process variable retransmit
feature appear in the SETUP LOOP PV RETRANSMIT menu.
Press YES to view the process variable retransmit parame-
ters.
ALARM
SETUP LOOP 02
PV RETRANSMIT?