Brooks Instrument SLAMf Series - Manual (Page 43)

3-9
Section 3 Operation Installation and Operation Manual
X-TMF-SLAMf-MFC-eng
Part Number: 541B032AAG
April, 2013
Brooks ® Digital MFC's and MFM's
Diagnostic Failure Description
RAM Byte by byte test of RAM detects bad memory location
Flash (Program Memory) 8-bit Checksum of the entire Flash not zero.
Non-Volatile Memory Byte by byte test of Non-Volatile Memory detects bad memory
location
Temperature Sensor Temperature Sensor reports a value outside the designed range of
0° C to 100° C
Power Supply (Internal) Any internally generated power supply voltage outside operational
limits. (3.3 Volt and 7.6 Volt internal supply voltages must be within
±5% of nominal value.)
Alarm Severity Alarm Latching Contact Low High Delay
Code Enable Enable Limit Limit
Diagnostic Alarm 12 n/a Off n/a n/a n/a
Flow 1 Off 11 Off Off 0% 120% 1.0
Flow 2 Off 10 Off Off 0% 120% 1.0
No Flow Indication Alarm 9 Off Off 2% n/a 1.0
Setpoint Deviation Alarm 8 Off Off -10% +10% 1.0
Totalizer Overflow Off 7 n/a Off n/a n/a n/a
User Power Supply Alarm 6 Off Off 13.5 27.0 1.0
Setpoint Input Out of Range Alarm 5 Off Off n/a n/a 1.0
Flow Output Out of Range Alarm 4 Off Off n/a n/a 1.0
Flow Output Loop Open Off 3 Off Off n/a n/a 1.0
Flow Sensor Out of Range Alarm 1 Off Off n/a n/a 1.0
Alarm Summary
The following table summarizes the parameters for each alarm type and
the respective default values.
3-6-2 Diagnostic Alarms (Analog versions only)
A Diagnostic Alarm will be indicated when any of the diagnostics below
detect a failure providing a visual indication via the red and/or green LED,
and activating the TTL open collector output located on the 15 pin
D-Connector. The diagnostic test or tests that have detected a problem and
caused the Diagnostic Alarm to occur can be determined only by reading a
parameter via the Service Port. When a diagnostic alarm occurs, the
device will automatically reset after approximately 5 seconds.