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TO GET ASSISTANCE, CALL: 919-774-7667
ZENITH PUMPS
Feedback Control by Using a Flowmeter with 4-20 (mA) Signal
1. Preliminary Action:
•
A flowmeter which can send 4-20 (mA) flow signal to ZeDrive
•
Max. Flowrate — F
m
(cc/min) (or in other units. Find out from the flowmeter)
2. Calculation:
None
3. Coding:
Check and change the following codes
Code 20 = F
m
Code 22 = F
m
Code 61 = 1
Code 63 = 1
Code 84 = 2
4. Wiring:
•
Locate Analog Select Jumpers on “Control Board”:
1. Loosen up 6 screws on the back panel, and 2
screws located on the heat sink of ZeDrive
2. Remove the back panel. Face the back of Ze-
Drive and place ZeDrive so that the heat sink points down. The top board is the
“Control Board”, and the bottom one is “Drive Board”
3. Locate Feedback Jumper as shown at left
4. Please check the jumper settings as shown at the
left, and make changes as necessary
•
Connect the wires from the flowmeter as shown at left
•
Leave anything else unchanged as before
5. Result:
•
The output from the pump will be controlled by the flowmeter
•
The units of the setpoint and the Tach are same as the unit of F
m
6. IMPORTANT NOTE:
•
The unit is no longer in (RPM). It is in the engineering unit, same as F
m
•
The pump speed may vary widely. Do not to exceed the factory suggested speed limit
•
Any restriction at the discharge side of the pump can rapidly increase the pump speed.
Check any down-stream restrictions before the operation
•
Always test the system without any down-stream restrictions. Gradually increase the
restrictions, and monitor the pump speed closely, make sure not to over-run the pump
•
You should test your system for safety under all potential conditions. Failure to do so
can result in damage to the equipment and/or serious injury to personnel
Analog Select Jumper
Analog Select Jumper Location
Heat Sink
Transformer
Feedback
(Not this jumper)
4-20 mA:
Left
Disregard
16
17
J4
10
J3
Shield
Signal
Common
From Device
Summary of Contents for ZeDrive
Page 10: ...Page 9 TO GET ASSISTANCE CALL 919 774 7667 ZENITH PUMPS Control Cabinet Wiring...
Page 18: ...Page 17 TO GET ASSISTANCE CALL 919 774 7667 ZENITH PUMPS Typical Applications Solutions...
Page 38: ...Page 37 TO GET ASSISTANCE CALL 919 774 7667 ZENITH PUMPS Trouble shooting Fault Information...
Page 45: ...Page 44 TO GET ASSISTANCE CALL 919 774 7667 ZENITH PUMPS Complete Code List...
Page 59: ...Page 58 TO GET ASSISTANCE CALL 919 774 7667 ZENITH PUMPS System Drawings...