Honeywell VPR100 User Manual page 111

Prompt
IN DECIMAL Select decimal position
POSITION
INTERACTIVE YES, NO
LATCHING YES, NO
MANUAL OFF OFF, discrete parameter, 0,
1
MANUAL RESET -100 to +100
OUTPUT LOW LIM & OFF or number
OUTPUT HIGH LIM
OUTPUT TRACKING 0-100%, Analog parameter,
OFF
PROCESS OFF, analog parameter,
VARIABLE number
PROP BAND#1 &
PROP BAND#2
PV LOW LIMIT & OFF or number
PV HIGH LIMIT
PV TRACKING PV, OFF
12/00
Table 4-10 Loop Prompts (continued)
Range/Selections
VPR & VRX – User Manual
Programming Function Blocks and Features
Definition
Used for all input parameters of the loop
Select interactive (YES) or non-interactive (NO) for the
control algorithm operation. Interactive causes the Gain,
Rate, and Reset terms to interact to make up the proportional
term of the algorithm (similar to analog controllers). In non-
interactive the proportional term is simply related to Gain.
Select the desired action required after a failure to the
failsafe status.
When the loop's PV or Setpoint #2 fails, the downstream
function block activates its failsafe (See Table 9-10, Default
condition column). If latching = YES, when the failure is
corrected the operator must take specific action to cancel
these failsafe measures and return theloop to normal
operation. (See Table 9-10 for action needed.) If latching =
NO, when the failure is corrected the loop will automatically
return to normal operation with no action needed by the
operator.
When this discrete input goes ON (1) it causes the control
output to go off.
This feature functions only when OFF is entered for RESET.
Enter a value equal to the desired loop output when the
process variable is at setpoint. This allows correction of
output to account for load changes to bring the process
variable up to setpoint.
For cascade primary loop, set to PV LOW LIMIT and PV
HIGH LIMIT of the cascade secondary loop, respectively.
This will be the loop's output value when the FORCE
REMOTE MAN input to the loop is high (1). See Force
Remote Man.
Process variable for the loop.
See GAIN#1 OR GAIN#2
Enter the high and low limits for the process variable being
controlled. Loop tuning parameters are based on the span
selected by the high and low limit values.
A selection of Process Variable (PV) will cause Setpoint #1 of
the control loop to track the process variable when the loop is
in Manual mode. A transfer to Automatic mode will maintain
the tracked setpoint value as the working setpoint of the loop
unless the loop was operating from Setpoint 2 prior to the
transfer to Manual.
95