Siemens LMV5 Quick Start Manual page 131

Other Common Errors
LMV5 will not start (stays in phase 12).
1) Verify that ignition positions are defined for all activated actuators, including the VSD.
2) Verify the following:
Parameter Note:
Refer to section 4-2
Terminal >
Parameter
LC_
> OptgMode
Value >
(external) ExtLC X5-03
(W1
IntLC
setpoint)
(bus
IntLC bus
setpoint)
(X62
IntLC X62
setpoint)
(external) ExtLC X62
(external) ExtLC Bus
3) If a low or high gas pressure fault occurs every time the gas valves attempt to open, it is
possible that the commons to the high and low gas pressure switches are wired through the
proof of closure switches on the gas valves. Thus, power will be removed from the high and low
gas pressure switch commons when the gas valves open.
4) If terminal X4-01.4 (alarm) is energized when a fault does not exist on the LMV5, this will cause
a manual lockout of the LMV5.
5) If indication of the gas and / or oil valve is desired, terminals X8.01.1 (gas) and X8.02.2 (oil)
must be used for this function. Indicator lamps and other devices must not be wired directly to
the gas valve and / or oil valve terminals.
6) If a single lamp is used such as "main burner on", a relay (or switch) must be used that changes
state with the fuel selector switch, so that only X8.01.1 is connected to the indicator when firing
gas and only X8.01.2 is connected to the indicator when firing oil.
LMV5 will not modulate properly
1) Check the PID settings, as a too small for P (Proportional band) can cause this.
2) Check the load mask parameters (under each fuel) .
Default values are: LoadMaskLow = 0%, LoadMaskHigh = 0%.
3) If the LMV5 goes to high fire in phase 52, check parameter StartPointOp (under each fuel).
Default value = xx, and should be typically set to = 1 (Low fire) Requires AZL ver 4.50.
LMV5 QSG Rev 4
Safety
Flange Alarm
Loop
X3-04.1 X3-03.1 X4-01.4
120 120 0
VAC VAC VAC
120 120 0
VAC VAC VAC
120 120 0
VAC VAC VAC
120 120 0
VAC VAC VAC
120 120 0
VAC VAC VAC
120 120 0
VAC VAC VAC
Sec 5 Pg 5
Burner
switch
X5-03.1
Input Controller Auto/Manual/Off
activated deactivated Automatic
120 120
VAC VAC
120 Don't
VAC care
120 Don't
VAC care
120 Don't
VAC care
120 120
VAC VAC
120 120
VAC VAC
SD_ModOn
vs Act Value
SD_
ModOn
Burner
on
120 120 Don't
VAC VAC care
Setpoint +
120 Don't
SD_ModOn above
VAC care
Act Value
Setpoint +
120 Don't
SD_ModOn above
VAC care
Act Value
Setpoint +
120 Don't
SD_ModOn above
VAC care
Act Value
120 120 Don't
VAC VAC care
120 120 Don't
VAC VAC care
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Act
Value