AUTOFLAME MK8 User Manual

2
Options & Parameters
Flame Safeguard (MM80001/FSG) Manual
Page | 46
Opt. #
Default
Range
Description
53
0
DTI: Steam Sequencing Burner Off Time
When the MM is in warming mode, it will warm to the standby setpoint
according to the on and off times set in options 53 and 54.
0
Disabled
1 – 200
Minutes
54
5
DTI: Steam Sequencing Burner On Time
1 – 30
When the MM is in warming mode, it will warm to the standby setpoint
according to the on and off times set in options 53 and 54.
Minutes
55
0
MM: Terminal T88 Function
This option selects the function of terminal 88, see options 16 and 45. For
setting 0, a line voltage input on terminal 88 is used to select the lead
boiler in sequencing, and overrides the DTI lead boiler select. For setting
1, a line voltage input on terminal 88 is used to select the external
modulation signal and 0V for internal PID. For setting 2, a line voltage input
on terminal 88 is used to select firing rate limiter. This permanently limits the
firing rate according to the input seen on the aux input channel (parameter
69), at 0V the MM uses its internal firing rate. For setting 3 a line voltage
input on terminal 88 is used for external setpoint & 0V for internal setpoint.
For setting 4 a line voltage input on terminal 88, uses the fixed firing rate set
on option 66, at 0V the MM uses its internal firing rate.
0
T88 selects Lead Boiler
1
T88 selects External Modulation
2
3
4
T88 selects Firing Rate Limiter
T88 selects External Setpoint
T88 selects Fixed Firing Rate Limit
56
0
MM: Alarm Output Operation (Terminal #79)
This is a switched neutral output to select how the alarm function
operates.
0
1
Relay normally off, on during alarm
Relay normally on, off during alarm
57
0
MM: Fuel Flow Metering
Fuel flow metering determines the firing rate. If no fuel flow meter is
available, a ‘dummy curve’ should be entered using the burner turndown
ratio from the burner rating to determine the low fire point, and the burner
rating for the high fire point. If enabled, fuel flow metering is initiated once
the burner has been commissioned and is firing. The MM will drive to the
low fire point first, and then go up the curve. For setting 2, see options 59
and 60. If using setting 2 for fuel flow feedback, then 4-20mA signal is
required on terminals EX- and EX+ on the expansion board (this cannot be
enabled with external level sensor nor fully metered combustion control, see
expansion option 4). For metric units, fuel flow is commissioned in MW for
metric units and MMBTU/hr for imperial units.
0
Disabled
1
Enabled
2
Enabled with 4-20mA feedback
58
-
Unused
59
100
MM: Fuel Flow at Maximum Feedback
1 – 10000
This will set the fuel flow value at 20mA feedback, see option 57.
0.01MW – 100.0 MW
60
0
MM: Fuel Flow Feedback Fault Tolerance
The fuel flow feedback fault tolerance allows an upper limit to be set on
the fuel flow when option 57 is set to 2. If the fuel flow exceeds this limit for
5 seconds, then a warning will appear.
0
1 - 500
Disabled
0.1% - 50.0% of high-fire fuel flow

AUTOFLAME MK8 Specifications

General

Brand	AUTOFLAME
Model	MK8
Category	Controller
Language	English