Ramp OFF:
Controller will be simple PID / ON-OFF controller with P, I, D
settings / hysteresis setting by user or default.
PARAMETER EXPLANATIONS :
The main control output is selectable between Relay1 / Analog output (available across
terminals 4 and 5) and Relay2 (available across terminals 2 and 3). If main output is selected
as Relay 2, all the control parameters will be applicable to the output connected to Relay 2 but
the set point applicable will be Set 1 (main set point). For analog retransmission, the main
output must be set to Relay 2 and the analog output (across 4 and 5) will be used for
retransmission.
Ramp HOLD:
Suspends the ramp at the last value.
a
!
MAIN OUTPUT:
!
SOFT START TIME:
Soft start time can be programmed in situations where full output is not required at power ON.
The time duration for the output to rise from 0% to 100% is programmed as soft start time.
This parameter can be used when a fixed percentage of output is desired. For example: If 4-
20mA analog output is being used and the desired output is 12mA, the hand percentage can
be programmed as 50%. This will ensure that the analog output available is fixed 12 mA i.e.
50%. In case of relay output models, the relay ON time and OFF time will be according to the
programmed Hand output percentage i.e. For 50% hand o/p percentage and cycle time
15sec, relay will be ON for 7.5sec and OFF for 7.5 sec.
!
HAND OUTPUT PERCENTAGE:
!
RAMP - SOAK:
The set point ramp feature can reduce thermal shock to the process, reduce temperature
overshoot on start-up or set point changes, or ramp the process at a controlled rate. The soak
feature can be used to hold the process at a preset temperature for a preset time.
Ramp modes:
Ramp ON:
Initiates the ramp. Ramp rate and soak time settings as programmed by
the user or default.
Rounding increment
Standby mode
Reset all
Display
Name & Description
Range
Display
condition
Default
value
TC / RTD with
resolution =
O
1 C or Analog
input.
26
Output power dampening
Analog output
model.
Filter time constant
/
/
, to
seconds
, to
seconds
to for
TC/RTD
Display as
per decimal
point
selected for
analog
input.
Programming
