Siemens LMV 5 Series Technical Instructions Download

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LMV Series

Technical Instructions

LV5-1000

Menu Path

Parameter

Default

Range

Description

51.1

52.2

52.4

LEGEND -

Password Access:

(U)=User, (S)=Service, (O)=OEM, Shaded = Commonly Used, ** = Must Set, X = Has Function, / = Partial Function

LMV

LC_OptgMode (U)

IntLC

ExtLC X5-03

IntLC

IntLC Bus

IntLC X62

ExtLC X62

ExtLC Bus

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
Modbus connection.
4) Internal load controller X62 (IntLC X62) - same as 2 except setpoint can be changed by
using an external analog signal on terminal X62.
5) External load controller X62 (ExtLC X62) - direct firing rate control analog signal on
terminal X62. Pressure / temperature sensors ignored. Parameters

SD_ModOn

and

SD_ModOff

ignored.

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.

x x x

Sensor Select (S)

Pt100

Pt1000
Ni1000

TempSensor

PressSensor

Pt100Pt1000
Pt100Ni1000

NoSensor

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-
Ni1000 sensor.
2) TempSensor, PressSensor - Temperature or pressure sensor wired to terminal X61. Can be
0-10VDC, 2-10VDC, 0-20mA or 4-20mA.
3) Pt100Pt1000, Pt100Ni1000 - Redundant temperature sensors wired to terminal X60 for
hot water boilers. Reduntant temp sensor for temperature limiter. Ni1000 is an LG-Ni1000
sensor.
4) NoSensor - Selected if LMV5x is being remotely modulated and no sensor is being used for
the load controller or the temperature limiter.
NOTE: Temperature limiter is only active for hot water boilers (temperature control).

x x x

MeasureRangePtNi (S)

302 F

302 F
752 F

1562 F

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)
more quickly. Does not affect the scaling (degrees / ohm) for the sensors. Set as low as
practical for the application. Also, this serves to scale INPUT X62 if used for remote
temperature setpoints. If set for 1562F, remote setpoints are scaled by parameter

var.

RangePtNi

x x x

Params & Display>

LoadController>
Configuration

SCC Inc.

Page 33

Section 3

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