4-3
Brooks
®
Digital MFC's & MFM's
Section 4 Maintenance &
Troubleshooting
Installation and Operation Manual
X-TMF-SLA5800-Series-RevB-MFC-eng
Part Number: 541B187AAG
June, 2016
Frequently Asked Questions (FAQ)
Q: What are the purposes of the LEDs on top of the MFC?
A: There are two LEDs on top of a DeviceNet version MFC. The LED
labeled 'MOD' is used to indicate module status. This LED should
normally be lit GREEN, this signifies the MFC is in proper working
mode. If the 'MOD' LED is lit RED, this signifies a critical fault has
occurred in the MFC. Please contact the factory for instructions.
The LED labeled 'NET' is used to indicate NETWORK status. Note the
'NET' LED can have 4 distinct operational states. For more complete
details on these LEDs, reference the Brooks DeviceNet Supplement
Instruction Manual.
Q: What is purpose of the Rotary Switches on top of the MFC?
A: Two of the rotary switches are labeled 'ADDRESS'. These two switches
are used to configure the MAC ID of the MFC when used on the
DeviceNet network. MAC ID stands for Media Access Control Identifier
and is used to set the unique address of the device on the network. The
possible range of addresses is 00 to 63. The out-of-box MAC ID setting
is 63. The third rotary switch is labeled 'RATE'. This switch sets the
baud rate of the MFC for communicating over the DeviceNet network.
The out-of-box default setting is 125K baud. For more complete details
on these switches, reference the Brooks DeviceNet Supplement
Instruction Manual.
Q: What is the purpose of the recessed push-button on the side of the
MFC?
A: This push-button is used to start a self-zero function. DO NOT press
this button unless you are performing this function as described in
Section 3-5 of this manual.
4-1-2
System Checks
The Brooks Digital Series Flowmeters and Controllers are generally used
as a component in gas handling systems, which can be complex in nature.
It can therefore be very difficult to isolate a malfunction in the system. An
inaccurately diagnosed malfunction can cause many hours of unnecessary
downtime. If possible, perform the following system checks before
removing a suspect Mass Flow Meter or Controller for bench
troubleshooting or return to the factory. (especially if the system is new):
1. Verify a low resistance common connection and that the correct power
supply voltage and signals are present of the connector of the Smart
TMF.