Delta 210 Series Specifications download pdf (Page 4)

Through the Conduit Openings

Depending on the D- Series model selected, use one

or both conduit openings. The threaded actuator

conduit openings accept 1/2 in. trade size conduit

fittings. Refer to Figure 6 and proceed as follows:

• one DM24-140 and one DM24-140-Z-A

• one DM24-210 and one DM24-210-Z

• one DM24-280 and one DM24-280-A

1. Loosen the cover screw with a Phillips No. 1

screwdriver, and remove the actuator cover.

Note: Do not use D24-70 or -140 or DM24-70 Series

models in tandem.

Plugs

(Conduit Openings)

Cover

Screw

The Master/Slave Jumper is factory set in the master

position. Determine the method for mounting the two

actuators in tandem: front-to-back (Figure 7 shows the

front view) or back-to-back and proceed as follows:

Common

CCW

Terminal 101

Terminal 102

Terminal 103

Master/Slave

Jumper W3

(Shown in the

Master Position)

Terminal Block 1:

Spade Terminals for Feedback

Potentiometer on -FB135 or -FB1K

and Auxiliary Switches on -A models

(See Figure 5.)

Terminal Block 2:

Figure 6: Location of the Conduit Openings

2. Push the plastic plug out of the conduit opening

with fingertip.

3. Use the Phillips screwdriver to puncture a hole

through the center of the plug, and reinsert the

plug into the conduit opening.

Note: For applications requiring metal conduit,

thread the conduit fitting into the conduit opening and

hand tighten.

IMPORTANT: Use flexible metallic tubing or its

equivalent with the fitting. Do not overtighten the

conduit fitting into the actuator to avoid damaging

the actuator threads.

4. Insert the cable wires through the plastic plug or

conduit fitting, and connect to the terminal block

using the applicable wiring diagrams in Figure 5.

Figure 7: Settings on On/Off and Floating

(D24-210 and D24-280) Models

5. Perform the procedures appropriate to the specific

application, as described in the Tandem Operation

and Setup and Adjustments sections.

1. Designate one actuator as the master, and move

the Master/Slave Jumper on the other actuator to

the slave position.

6. Reattach the cover and tighten the cover screw.

2. Connect Terminal 101, Terminal 102, and

Terminal 103 from the master actuator to the

corresponding terminals on the slave actuator.

(See Figure 7 for D24 models and Figure 8 for

DM24 models.)

Tandem Operation

The tandem configuration provides twice the torque of

a single actuator as follows: 280 lb·in (32 N·m) for two

DM24-140s, 420 lb·in (48 N·m) for two DM24-210s, or

560 lb·in (64 N·m) for two DM24-280s. The actuators

operate in exact synchronization, ensuring the load is

split evenly between each unit.

a. When mounting two actuators front-to-back on

the same shaft, connect:

• Terminal 101 from the master actuator to

Terminal 101 on the slave actuator

Models with the same torque and control input may be

mounted in tandem. For example:

4 D-70, D-140, D-210, and D-280 Series Electric Non-Spring Return Actuators Installation Instructions

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Delta 210 Series Specifications Page 4

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