Dungs EMP-5 Instructions d'installation - Page 7

Parcourez en ligne ou téléchargez le pdf Instructions d'installation pour {nom_de_la_catégorie} Dungs EMP-5. Dungs EMP-5 9 pages. Current or voltage input drive modulating actuator

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Testing

Side Box Test #1: Connect the drive's leads to the cor-

responding lead of a suitable current signal source (current

calibrator). Apply power to the actuator, then turn on the

current signal source (current calibrator). Adjust the current

signal source (current calibrator) until the mA meter reading

equals the desired zero point current (2 to 16 mA). Adjust

the current signal source (current calibrator) until the mA

meter reading equals the finish point current. With the de-

sired finish point current applied, the actuator shaft should

drive to the finish point. If the actuator fails this test, repeat

the CP-9302-702 adjustment on page 4. Short the Violet/

White wire to the Violet wire; the actuator shaft should turn

counterclockwise. Short the Violet/White wire to the Bluewire;

the actuator shaft should turn clockwise. When you break the

connection between the Violet/White and Violet wires, the

shaft should return fully clockwise. If the side box fails this

test, perform Test 2.

Technical Tips and Data

Tech Tip #1: There is no rectified circuit in the actuator's

shading windings. The voltage on the shading windings

is about 30 VAC, and the voltage on the main windings is

120 VAC.

Tech Tip #2: Maximum voltage to terminals 7 and 8 is

24 VAC. During operation, the voltage at these terminals is

about 12 VAC.

Tech Tip #3: For 0 - 10 VDC input control, the resistance

across + and - leads is 10,000 ohms.

Tech Tip #4: For 4 - 20 mA input control, the resistance

across + and - leads is 250 ohms.

Tech Tip #5: For 4 - 20 mA input control, the input control

voltage on the + and - leads should be 1.0 VDC at 4 mA, 2.5

VDC at 12 mA, and 5 VDC at 20 mA.

Troubelshooting

Problem

#1: The actuator will not modulate; it will only remain at 0 deg,

and then at some input the actuator will drive completely

to 90 deg.

#2: The actuator will not modulate, or modulation will be erratic.

#3: The actuator will actuate on the opposite direction; with

4 mA in, the actuator goes to high fire, and with 20 mA, it

goes to low fire. Or, when the designated wires for HIGH

fire override are made, it drives to LOW fire.

7 ... 9

Actuator Test #2: If the side box test passes, then the actua-

tor can be tested. Disconnect the wires at terminals X, 2 and

3. Jumper actuator terminal "X" to terminal 2; the actuator

shaft should turn clockwise (CCW for reverese configuration).

When the connection between terminals "X" and 2 is broken,

the shaft should remain stationary. Then jumper terminal "X"

to terminal 3; the shaft should turn counterclockwise (CW for

reverese configuration).

Conclusion:

1) If the side box test #1 fails but the actuator test #2 passes,

then the side box is defective.

2) If the actuator test #2 fails, then the actuator is defective.

3) If both tests fail, then the actuator is defective. The side

box must be tested on a functional actuator in order to

determine whether or not it is defective.

Tech Tip #6: Across terminals 2 to X and 3 to X, the voltage

should be 24 - 30 VAC and about 0.9 amps when actuator

is powered.

Tech Tip #7: The black converter (side box) operates on

24 VDC, and pulls its voltage from the shading windings.

Tech Tip #8: The EMP has internal impedence protection.

There is no need to electrically protect it with a fuse.

Tech Tip #9: The amperage draw under locked rotor is the

same.

Tech Tip #10: The torque is the same at low temperatures,

but the timing might be longer.

Possible Solution

#1: This problem can occur if the factory configuration (CCW

rotation for 0 - 90 deg) is switched to REVERSE configura-

tion (CW rotation for 0 - 90 deg), but only one set, rather

than both sets, of terminals were not changed. Terminals

7 and 8 AND 2 and 3 need to be reversed.

#2: Verify that the low voltage input wires are not in the same

conduit at the high voltage wires. Check jumper under

side box and adjust pots if needed.

#3: Verify that the input wires (the - and the +) are not reversed

at the meter, the side box, or at the temperature controller.