Chromalox 2110 Manuale di istruzioni - Pagina 7

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Mount the 2110

1. Cut out a 1/4 DIN, 3.6-inch (92mm) square hole in

the mounting panel.

2. Insert the unit into the mounting hole as shown in

Figure 3.4.

3. Slide the front mounting collar onto the back of the

controller.

4. Slide the rear mounting collar onto the back of the

controller until the holding tabs securely engage

with the holding tab slots in the controller housing

(see Figure 3.4).

5. Tighten the four rear collar mounting screws until

the unit is held firmly in the panel. CAUTION: Do

not overtighten.

The controller will now be held firmly in place.

Chromalox

2110

Load

°F

Alarm

°C

(101.6)

Temp

Set Point

Point

(101.6)

Figure 3.3

Mounting Dimensions

Figure 3.4

Mounting the 2110

(92)

(10)

(90)

(102)

3.6

(92)

Holding

Tabs

Slots

Holding

Tabs

Front Collar

Rear Collar

Mounting Screw

Good Wiring Practices

Separate wire into bundles — When planning the

system wiring, separate wiring into functionally similar

bundles, e.g.

• Power leads

• Sensor leads (if power leads must cross sensor

leads, they should cross at a 90° angle)

• Output signal lines

Separate sources of electrical noise — Locate all

sources of electrical noise in your system, and sepa-

rate these sources from the control system, e.g.

• Motors

• Contacts

• Solenoids

Electrical noise can affect the function of any control

system. When driving a contactor coil or other induc-

tive load, an appropriate rated AC snubber circuit is

recommended (Chromalox Part No. 0149-01305).

Connect before power is applied—Make all electrical

(12.7)

wiring connections to the back of the controller before

power is applied to the unit.

Comply with regulations.

All wiring practices must comply with local

regulations. Failure to do so could result in

damage to controller and/or personal injury or

death from electrical shock.

This instrument is intended for panel mounting and the

terminals must be enclosed within a panel. Use Nation-

al Electric Code (NEC) Class 1 wiring for all terminals

except the sensor terminals.

Check wiring decal — Check the wiring decal on the

side of the unit to verify the model number. The wiring

decal shows the wiring terminations. All wiring will be

connected to the terminals on the back of the instrument

case. Specific wiring instructions for different input and

output types are given in this section. See also Figure 3.5.

Additional information — For sensor wiring practices,

see "Sensor Input Wiring". For additional information

on good wiring practice, request IEEE Standard No.

518-1982 from IEEE, 345 East 47th St., New York, NY

10017 or www.ieee.org.

Sensor Input

Wiring

Output

Wiring

(S1, S2)

Figure 3.5

Wiring Terminal Identification

Alarm Wiring

COM

Instrument

Power Wiring

Output Wiring (R1, R3, V0, or S0)