360077-1/O 38
i.Series® - All Models
6 Access Level 4 parameters:
a Navigate to Level 3 program mode.
b Select the “UEr” parameter.
c Press and hold the UP and DOWN buttons simultaneously for approximately 10 seconds.
d The“LOCK”parameterashesonthedisplay.
7 Exit program mode:
a Press and hold the UP and DOWN arrow buttons simultaneously for approximately three
seconds, or
b the current chamber temperature is displayed.
9.1 Level 1 Parameters and Values
NOTE ► Parameters are listed in order of appearance.
► The temperature controller is programmed at the factory with a refrigerator setpoint of
4.0 °C.
Parameter Description Default Value
Autotune selection oFF
SP1 proportional band (gain) or hysteresis (in °C)
iLR111 / iPR111 models: 1.5
All other models: 4.0
SP1 integral time/reset (in minutes) oFF
SP1 derivative time/rate oFF
SP1 derivative approach control 0.5
SP1 mode selection (ON/OFF or proportional cycle-time) on.oF
SP1 offset (manual reset) 0.0
Lock main setpoint oFF
Ramp rate (if ramp is on) 0
Ramp selection oFF
Soak time selection --
SP2 low alarm setpoint (in °C) 0.0
SP2 high alarm setpoint (in °C) 0.0
SP2 hysteresis or proportional band (in °C) 0.1
SP2 mode selection (ON/OFF or proportional cycle-time) on.oF
Parameter level currently selected 1