McQuay ASC-200 Installation Manual

Installation & Maintenance Data

IM 611-1

MicroTech® Keypad/Display Door Kit for ASC-200

General Description

The Keypad/Display Door Kit is an option to the 200 Series Application Specific Controller (ASC-200). The door kit replaces the original door on the ASC-200 which has no keypad/display. The Keypad/Display Door Kit comes complete from the factory with a 4-line by 40-character backlit, liquid crystal display (LCD) with an interactive keypad. The Keypad/Display Door Kit is easily installed and enables the user to have stand-alone setup and control of the ASC-200 with the aid of specific software designed for each application. For more information on the ASC-200, refer to Bulletin No. IM 615, MicroTech 200 Series Application Specific Controller.

Installation

Group:

Part Number:

Date:

Controls

February 1998

579170Y

The installation of the Keypad/Display Door Kit consists of removing the original door from the panel, attaching the new door to the panel, and wiring the keypad/display to the panel.

WARNING

Electrical power hazard. Can cause injury to the user or damage to the panel.

Make sure that the electrical power is OFF before removing or installing the door. This will prevent injury to the user or any damage to the panel in the event that the door comes in contact with a power supply voltage.

Removing the Original Door

1. Remove and save the four hinge screws, star washers, and nuts that attach the door to the panel.

Note:

Do not remove the hinge screws that are attached directly to the panel.

2. Remove the grounding strap assembly from the original door. Note how the grounding strap

assembly was installed.

Attaching the Keypad/Display Door

1. Align the keypad/display door with the panel hinges.

2. Insert the hinge screws from the original door into the hinges.

3. Position a star washer on each hinge screw once it passes through to the back of the door.

4. Route the grounding strap around the panel base (see Figure 1).

5. Place the eye-loop on the door’s bottom hinge screw.

6. Position a second star washer on the bottom hinge screw.

7. Place a nut on each hinge screw.

8. Tighten the hinge screws until the door is held firmly in place.

Figure 1. Grounding Strap Installation

Hinge

Screw

Panel Door

Star Washer

Panel Base

Grounding Strap

Wiring the Keypad/Display Door

The keypad/display door has a factory installed 34-conductor ribbon cable that is attached to the back of the keypad/display control board.

1. Connect the loose end of the 34-conductor ribbon cable to the “Keypad/Display” connector on the MCB (see Figure 4).

2. Connect the wire from pin 9 on the IDC connector to the 5 VDC field wiring terminal in the panel (see Figures 2 and 4).

Figure 2. IDC Connector (Pin 9 to 5 VDC)

(9) (8) (7) (6) (5) (4) (3) (2) (1)

*Pins are not numbered on the bo

To 5 VDC field wiring terminal

3. Connect the wire from pin 8 on the IDC connector to the DC GND field wiring terminal in the panel (see Figures 3 and 4).

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