Troubleshooting guide

MAGNUM VERSION 8 MANUAL REVISION 3.1
106
TYPE ITEM
Fixed Value Enter a fixed value with decimal place if required.
SI Select Sensor Input
AO Select Analog Output
RO Select Relay Output
Setpoints Select Setpoint, number is also display for ease of selection. All Setpoints are shown, both
active and inactive.
CLOCK Select system clock. The following can be selected: Hours, Minutes, Seconds, Day of
Month, Day of Week (1 = Sunday - 7 = Saturday), Year (2 digits), and Month (1-12). These
are current values from the Magnum.
Unit Chiller The following can be selected: FLA %, Steps wanted, Steps ON, Steps available, steps
allowed on, % Load, STATE, Lead Compressor, Mode (cooling or heating), and Ice Mode
Done (if ice mode option selected).
Compressor #1
- Compressor
#20
The following can be selected for any compressor: Compressor State, Suction Pressure,
Discharge Pressure, Oil Pressure Differential, Motor Amps, Suction Temperature, Discharge
Temperature, Oil Temperature, Motor Temperature, EXV Value Position, Oil Pressure,
Refrigerant Temperature, Flow Indicator, Compressor Proof, Compressor Speed, Oil Float,
Refrigerant Level, Condenser Temperature #1, Condenser Temperature #2, Fla %,
Saturated Suction Temperature, Suction Superheat, Saturated Discharge Temperature, and
Discharge Superheat.
Note all of the above may not exist for an individual configuration.
The value that is passed to the User Logic depends on the item selected. For example:
 A Relay Output’s value is 0 if it is off and a 1 if it is on.
 A Digital Input’s value is 0 if it is off and a 1 if it is on.
 An Analog Input and Analog Output value are the actual values as displayed, includes the decimal
place.
 The unit, compressor, or loop state is a numeric value that will relate to the state names in this
manual. This value is show as the number in parenthesis following the state name.
Operators 7.81.2.
The action cell is located between the operand cells.
The following actions can be selected from a drop down list this will determine the value of the sensor:
Display as: Action
None Second operand is not required.
+(DI OR) Add the value of the two operands if they are analog values; if digital then they will be OR
together. If digital and either operand is on the result will be 1 (ON).
- Operand 1 minus Operand 2.
*(DI AND) Operand 1 times Operand 2 if they are analog values; if digital then they will be AND together. If
digital and both operands are on the result will be 1 (ON) else the result will be 0 (OFF).
/ Operand 1 divided by Operand 2
High Value Result will be the highest value between Operand 1 and Operand 2
Low Value Result will be the lowest value between Operand 1 and Operand 2