Automated Logic MX400 Petunjuk Teknis - Halaman 3

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Mounting

Screw the MX400 into an enclosed panel

using the mounting holes provided on the

cover plate. Be sure to leave about 2 inches (5

centimeters) on each side for wiring.

Addressing

Before setting or changing the address, make

sure the MX400's power is off. The MX400

only reads the address when the module is

turned on.

The MX400 uses a rotary switch to assign the

module's expander number. If the module's

expander address is three, set the switch to

three, as shown in Figure 2.

Figure 2. Setting the expander's address

Power Wiring

Whenever possible, make sure the module's

power and communications connections are

working properly before connecting any input

or output points.

CAUTION The MX400 module is a Class 2

device (less than 30VAC, 100VA maximum).

Take appropriate isolation measures when

mounting the MX400 module in a control

panel where non-Class 2 devices (for

example, 120VAC) or wiring are present.

You can power several modules from the

same transformer if you maintain the same

polarity.

The MX400's operating range is 21.6VAC to

26.4VAC. If voltage measured at the module's

Revised 4/3/00 • MX400

1's

power input terminals is outside this range,

the module may not work properly.

1. Turn the module's power off. This

prevents the module from being powered

up before the proper voltage is verified.

2. Make sure the 24VAC power source is off.

3. Connect the power wires to the module's

power terminals labeled Ground and

24VAC (see Figure 1 on page 2 for

location).

4. Apply power to the transformer.

5. Make sure that 24VAC is present at the

module's power input terminals.

6. Set the module's address. Refer to

"Addressing" for details about setting the

address.

7. Turn the module's power switch on.

When the module turns on, the Run and

Power LEDs turn on. The Run LED begins

blinking and the Error LED turns off. See

"LEDs" on page 4 to troubleshoot the

LEDs. If the module does not respond, call

Technical Support at (770) 429-3002.

Digital Outputs

The MX400 module has four digital outputs

that can be connected to a maximum of 24

Volts AC/DC. Each output is a dry contact

(rated at 3A, 24VAC maximum) that can be

configured as normally open or normally

closed, according to the jumper setting.

Be sure the MX400's power is off before

wiring any inputs or outputs. Connect the

output wiring to the screw terminals on the

module as shown in Figure 3 on page 4.

NOTE

Do not power pilot relays from the

same transformer that powers the MX400.

To verify each output's operation, lock the

output to a known condition using the