Myron L 750 II Series User Manual

38
Set Point Conversion (SPC) / Reversing Set Point
The Myron L
®
CompanyshipstheTemperaturecontrollercong-
ured to Alarm/control when the temperature is TOO HIGH. If the
congurationiscorrectforyourrequirementsskiptoTempera-
ture Set Point Adjust.
As many uses require the temperature to be controlled by the
useofaheaterorchiller,theTPOModulemaybecongured
to maintain an elevated or lowered temperature as required.
To reverse the set point/relay operation:
 1. LocatetheSPConTP/TPOcircuitboard.Seegures
III.D.8 & III.D.14.
2. Remove Jumpers.
 3. ReinstallJumpers90°asshowningureIII.D.15.
FOR TEMPERATURE MODULE
Temperature Set Point Adjust
1. Ensure the SCO Module Set Point control is set
  toFULLCCWposition.ForlocationseegureIII.D.7.
2. Press BOTH the Temperature Select switch and
the Set Point switch on the front panel.
3. Adjust the TP/TPO Module Set Point Two (SP2)
  totemperatureasdesired.SeegureIII.D.9.
Hysteresisisxedat~±6°CunlessSpecialOrderedwithad-
justable control.
Hysteresiswithadjustablecontrolisvariablefrom±0.6to6°C.
CAUTION: Adjusting the hysteresis too narrow may cause the
alarmtouctuate(on-off)duetotemperaturevariationscausing
the relay to chatter. This condition is to be avoided, it may dam-
age the heater, chiller, etc. and will eventually damage the relay.
REASSEMBLY
 1. Carefullyreinstallthefrontpanel,bottomrst.
Ensure no wires have been pinched between
enclosure and front panel.
2. Reinstall the four (4) screws and tighten.
3. To operate, turn power ON.
FS
INC
INC
TEMP
CONTROL
HARNESS
DEC
DEC
SET POINT
CONVERSION (SPC)
DETAIL OF SET POINT CONVERSION (SPC)
ON TP/TPO MODULE AS CONFIGURED
WHEN SHIPPED FROM THE MFR.
Figure III.D.14
SPC
DEC
DEC
FS
INC
INC
TEMP
CONTROL
HARNESS
DEC
DEC
SET POINT
CONVERSION (SPC)
SPC
DEC DEC
Figure III.D.15

Myron L 750 II Series Specifications

General

Brand	Myron L
Model	750 II Series
Category	Controller
Language	English