AUTOFLAME Mk8 MM User Manual

17 Fully Metered Combustion Control
Mk8 MM Manual Page | 303
17.4 Set-Up
17.4.1 Configuration
At minimum the MM will require 4-20mA signals from the air and gas flow meters. If using mass flow meters,
then temperature and pressure sensors for the fuel and air must be disabled for fully metered (they can still
be used for flame safeguard). Volume flow metering requires the fuel air and temperature and pressure
values to derive the mass flow rates. When using volume flow metering, enabling temperature and pressure
sensors will make the displayed mass flow calculation more accurate. Temperature and pressure sensors
should be installed near the volume flow meters.
The table below shows the MM terminals used for fully metered combustion control.
Terminal
Description
Function
T2
T2 temperature sensor
Fuel temperature
-
Common
Common for T2
T3
T3 temperature sensor
Air temperature
-
Common
Common for T3
F-
Common
Common for MF
MF
Make-up flow meter 4-20mA
Air flow rate
EX-
Common
Common for EX+
EX+
4-20mA
Gas flow rate
31
Digital input signal (brown)
Gas/ air pressure sensors
32
Digital input reference (purple)
33
DC neutral (blue)
34
DC power (red)
When wiring the gas and air pressure sensors, the screen is connected through the casing of the lead and
through the sensor; therefore the flying lead should be connected to the MM without a screen. The screen
should be carried through until the connection to the MM; the screen should not be connected to the S
terminal.
The table below shows the options/expansions options to be set for fully metered combustion control.
Option
Description
Setting
57
Fuel flow metering
1
61
Fuel 1 calorific value
Must be set accurately
62
Fuel 2 calorific value
Must be set accurately
63
Fuel 3 calorific value
Must be set accurately
64
Fuel 4 calorific value
Must be set accurately
Expansion Option
Description
Setting
140
Fully metered function
1
141
Fuel flow meter type
As required
142
Fuel flow meter scaling
As required
143
Air flow meter type
As required
144
Air flow meter scaling
As required
145
Fuel temperature sensor enable
Optional
146
Air temperature sensor enable
Optional
147
Fuel pressure sensor enable
Optional
148
Air pressure sensor enable
Optional
149
Maximum fuel channel compensation
As required
150
Maximum air channel compensation
As required
151
Action on air adjustment failure
As required
152
Action on flow meter failure
As required
153
Default ambient air pressure
As required
154
Fuel 1 density
Required for volume flow meter
155
Fuel 2 density
Required for volume flow meter
156
Fuel 3 density
Required for volume flow meter
157
Fuel 4 density
Required for volume flow meter

AUTOFLAME Mk8 MM Specifications

General

Brand	AUTOFLAME
Model	Mk8 MM
Category	Controller
Language	English