The maximum allowable field wiring resistance between the transmitter and the IOTA connection terminal is dependent upon the voltage requirement of the transmitter. The formula for calculating the maximum wiring resistance for the Series C UIO channel used as an analog input is given by the following equation.
Lower Display
Prompt
Upper Display
Range of Setting or Selection
Parameter Definition
SP LOLIM -999.0 to 9999.
inputs units
SETPOINT LOW LIMIT* — this selection prevents the
local and remote setpoints from going below the value
selected here. The setting must be equal to or greater
than the lower range of input 1 and input 2. Input 2,
when configured for remote setpoint, will be restricted to
this lower limit.
ACTION CONTROL OUTPUT DIRECTION — in what direction
do you want the recorder output to go when the process
variable increases.
DIRECT DIRECT ACTING CONTROL — the recorder's output
increases as the process variable increases.
REVRSE REVERSE ACTING CONTROL — the recorder's output
decreases as the process variable increases.
OUTHILIM –5.0 to 105.0% of output HIGH OUTPUT LIMIT — this is the highest value of
output beyond which you do not want the recorder
automatic output to exceed. Use 0 to 100% for time
proportional output type.
OUTLOLIM –5.0 to 105.0% of output LOW OUTPUT LIMIT — this is the lowest value of
output below which you do not want the recorder
automatic output to exceed. Use 0 to 100% for time
proportional output type.
DROPOFF –5 to 105.0% of output CONTROLLER DROPOFF VALUE — select an output
value that below which the recorder output will dropoff to
the low output limit value set in prompt "OUT LOLIM."
DEADBAND
–5.0 to 25.0%
0 to 25.0%
0.5 to 5.0%
DEADBAND is an adjustable gap between the
operating ranges of output 1 and output 2 in which
neither output operates (positive value) or both outputs
operate (negative value). It is the difference between the
nominal trip points of relay 1 and relay 2.
Time Duplex
On-Off Duplex
Position Proportional
OUT HYST 0.0 to 5.0% of PV span HYSTERESIS (OUTPUT RELAY ONLY) is an
adjustable overlap of the ON/OFF states of each control
output. This is the difference between the value of the
process variable at which the control outputs energize
and the value at which they de-energize. Only
applicable for ON-OFF control.
FAILSAFE 0 to 100% FAILSAFE OUTPUT VALUE — the output level used
when you have communications SHED or when NO
BURNOUT is configured and input 1 fails.
