Discontinued – Max Machinery 286-300 SERIES TRANSMITTERS User Manual
Page 15
Temperature Considerations
Continuous exposure of the stator housing and the circuitry to high ambient temperatures should be
avoided if possible. It is a good idea to locate both of these components away from hot spots such as
steam pipes, ovens, and heaters. The circuitry in the remote enclosure is rated for operation up to 80°C,
so this is the limit on the ambient air temperature at the enclosure. At the flowmeter, the metered fluid
temperature should not exceed 130° C (265° F) (stator insulation limitation) and the ambient
temperature should not exceed 105° C (220° F) (PVC cable jacket limitation).
Outputs, Options, Indicators
See pages 6-8 of the manual for detailed explanations of the transmitter’s outputs, options, and
indicators. The diagram below points out the location of the features on the printed circuit board.
Appendix A: Remote Mount Transmitter
D10: Direction/Phase B (Terminal 6
Status) (High = Green, Low = Red)
S4-2: Output Select (2- Phase
or Combined Output)
S5: Calibrate Stator Offsets
(and Angle). Need S3 in
position 0 to start Calibration.
S3: Output Frequency Select
And Calibration Enable
D7: Microcontroller Memory
Status (On = Fail)
S4-1: Select Meter Type
Type
Stator Phase A
Stator Phase B
Common
S1-1: Ground
S1-2: Filter
Terminal Block
1. Case (Green)
2. Common (Black)
3. Power 5-30VDC (Red)
4. Combined Output (White)
5. Phase A Out (Orange)
6. Phase B Out or Direction (Blue)
S2: Reset Microcontroller
D8: Flow too low to calibrate
D9: Calibration Active
D3-D6: RVDT Rotor Position
Indication (4 LED’s)
S3
2-Phase
Combined
Position
Output
Output
0
0 (Calibrate)
0 (Calibrate)
1
12
24
2
25
50
3
50
100
4
100
200
5
150
300
6
250
500
7
300
600
8
500
1000
9
*
*
Cycles per Revolution
* Not Specified, Usually same as S3=8
Testpoints
J4: Stator Cable Terminal Block
Wire Colors Denoted on PCB
“DRN” indicates the Drain wire
Connected to cable shielding
D11: Output/Phase A (Terminal 4 & 5
Status) (High = Green, Low = Red)
286-300-350 © 2002, Max Machinery, Inc.
(15)
Discontinued