Siemens LMV5 Series Technical Instructions page 91

LMV Series
LEGEND - Password Access: (U)=User, (S)=Service, (O)=OEM, Shaded = Commonly Used, ** = Must Set, X = Has Function, / = Partial Function
Menu Path Parameter
LC_OptgMode (U)
Params & Display>
LoadController>
Configuration
Sensor Select (S)
MeasureRangePtNi (S)
SCC Inc.
Default Range
Sets the load controller operating mode of the LMV5.
1) External load controller X5-03 (ExtLC X5-03) - use with a floating bumping type of universal
controller on X5-03 pins 2 and 3. Parameters SD_ModOn and SD_ModOff ignored.
2) Internal load controller (IntLC) - use with a directly connected pressure or temperature
sensor. Setpoint W1 is normally used with this mode.
3) Internal load controller Bus (IntLC Bus) - same as 2 except setpoint W3 can be changed via
ExtLC X5-03 Modbus connection.
IntLC 4) Internal load controller X62 (IntLC X62) - same as 2 except setpoint can be changed by
IntLC Bus using an external analog signal on terminal X62.
IntLC
IntLC X62 5) External load controller X62 (ExtLC X62) - direct firing rate control analog signal on
ExtLC X62 terminal X62. Pressure / temperature sensors ignored. Parameters SD_ModOn and
SD_ModOff ignored.
ExtLC Bus
6) External load controller Bus (ExtLC Bus) - direct firing rate control via Modbus connection.
Pressure / temperature sensors ignored. Parameters SD_ModOn and SD_ModOff ignored.
NOTE: If "Load Controller not active" is displayed, go to: SystemConfig > LC_OptgMode .
NOTE: Modes 1 and 3 thru 6 can be switched back to mode 2 by closing a contact between
X62.1 and X62.2. When in mode 2, contact closure can be used to switch between setpoint
W1 and W2.
Defines the type of sensor that will be used for the internal load controller.
1) Pt100, Pt1000, Ni1000 - Temperature sensor (RTD) wired to terminal X60. Ni1000 is an LG-
Pt100
Ni1000 sensor.
Pt1000
2) TempSensor, PressSensor - Temperature or pressure sensor wired to terminal X61. Can be
Ni1000
0-10VDC, 2-10VDC, 0-20mA or 4-20mA.
TempSensor
Pt100 3) Pt100Pt1000, Pt100Ni1000 - Redundant temperature sensors wired to terminal X60 for
PressSensor
hot water boilers. Reduntant temp sensor for temperature limiter. Ni1000 is an LG-Ni1000
Pt100Pt1000
sensor.
Pt100Ni1000
4) NoSensor - Selected if LMV5x is being remotely modulated and no sensor is being used for
NoSensor
the load controller or the temperature limiter.
NOTE: Temperature limiter is only active for hot water boilers (temperature control).
Sets the end of measurement range for platinum or LG-nickel temperature sensors (RTDs)
connected to terminal X60. Lower settings will detect sensor malfunctions (short circuits)
302 F
more quickly. Does not affect the scaling (degrees / ohm) for the sensors. Set as low as
302 F 752 F
practical for the application. Also, this serves to scale INPUT X62 if used for remote
1562 F
temperature setpoints. If set for 1562F, remote setpoints are scaled by parameter var.
RangePtNi .
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