McQuay MicroTech Installation And Maintenance Data

Brand: McQuay

Model: MicroTech

Type: Installation And Maintenance Data

This manual provides information on the components, in-

stallation, and service information for the

MicroTech”

Modem Kit. This new modem kit (part number 0072140601)

replaces part numbers 06680478-01 and 06702848-01

previously offered. The

MicroTech

Modem Kit, in conjunc-

tion with

MicroTech

MonitorTM

software, allows the monitor-

ing of various

MicroTech

panels and controllers from a

remote or off-site location. See the list below for the

Micro-

Tech controllers that can accommodate a modem.

Network Master Panel (NMP)

Series 200 Application Specific Controller (ASC-200)

General Description

Loop Water Controller (LWC)

Application Specific Controller (ASC)

Remote Monitoring and Sequencing Panel (RMS)

Remote Monitoring and Control Panel (RMC)

Chiller System Controller (CSC)

Chiller Plant Controller (CPC)

Centrifugal Chiller Unit Controller

Reciprocating Chiller Unit Controller

Self-contained Air Conditioning Unit Controller

Screw Chiller Unit Controller

Applied Rooftop Unit Controller

Component Data

The main components of the

MicroTech

Modem Kit include

a modem, an interface cable, a U-shape and L-shape

bracket, and a ?&inch foam gasket.

Modem

The modem, shown in Figure

is a US Robotics”

World-

PortTM

14.4K

Fax/Data modem. A modem allows com-

munications between a

MicroTech

controller or a network of

controllers and a remote PC (not in the same location as

the controller). This is done by connecting the modem to a

phone line. The person wanting to monitor the controller(s)

then dials the phone number assigned to the modem.

The modem has four feedback

LEDs,

a nine-pin female

extension cable, a phone jack, and an AC adapter jack.

Note: To monitor

MicroTech

controller(s) via the use of

a modem, your PC must be equipped with a modem and

the appropriate

MicroTech

Monitor software package.

Feedback

LEDs

The Feedback

LEDs

show the status of the modem.

The HS

LEDs

refer to the modem’s connection speed.

There are two HS

LEDs,

one green and one red. The

LEDs

are both located under the heading

“HS”

on the modem

(see Figure

1).The

LED will either stay on or flash (see

Table 1 for LED interpretation).’

Table 1. HS LED lnterpretation

The

ARQ/FAX

LED refers to error control or fax opera-

tions. The LED will either stay on or flash. ARQ stands for

Automatic Repeat Request. If an error occurs, the modem

will detect it and retransmit the data (see Table 2 for LED

interpretation).’

Table 2. ARQ/FAX LED Interpretation

The CD LED refers to carrier detect. The term “carrier” is

defined as the following according to the US Robotics

WorldPort

High Speed Modem User’s Guide: “A continuous

frequency that can either be modulated or impressed with

another information-carrying signal. These carriers are

generated and maintained by the modem via transmission

lines of the telephone company.” Table 3 shows the CD LED

interpretation.’

Table 3. CD LED lnterpretation

The LB LED refers to low battery. In all

MicroTech

ap-

plications, a battery is not used. The power plug provides

power to the modem. If the LED is on, the power supply has

a low voltage and needs to be checked.

Extension Cable

The extension cable is an external cable that is hard-wired

to the modem. The cable is 12-inches long and is termi-

nated with a nine-pin female connector. The extension

cable attaches to the interface cable (see Figure

2),

and the

two are secured together by screw connections.

Phone Jack

The phone jack connects to an existing telephone line and

allows data transmission to an external PC to take place.

The jack’s location is on the side of the modem. A

quick-

connector on the end of the telephone line connects to the

phone jack. By calling the telephone number and having the

correct PC software and modem, you can initiate com-

munications between the

MicroTech

controller(s) and your

PC.

AC Adapter Jack

The AC adapter jack is an entry point for AC voltage. The

jack’s location is on the top of the modem. A power plug

from the interface cable (see Figure 2) connects to the jack

and sends the AC voltage to the modem.

Page 3 I IM 564

Figure 1. US Robotics@

WorldPortTM

Modem (14.4K)

Top View

geedback LEd’s

Phone Jack

Side View

Figure 2. Interface Cable

Interface Cable

The interface cable connects to the modem’s extension

cable and the

MicroTech

controller. Figure 2 shows the

interface cable. The interface cable has a nine-pin male

connector terminated on one end. This male connector

attaches to the extension cable’s nine-pin female connector.

The connectors are held securely in place by screw

connections.

On the other end of the interface cable are a power wire,

an AMP connector, a power plug, and a 34-call initiate

connector.

Power Wire

The power wire is a red, 22 AWG wire. This wire delivers

DC voltage to the modem when connected to a 12-17 VDC

source in the

MicroTech

controller.

AMP Connector

The AMP connector attaches directly to a

MicroTech

con-

troller’s communication port A. By connecting the AMP

connector, you allow communications from the controller to

flow through the cables and into the modem.

Note: The modem will not operate unless the AMP con-

nector is connected. The modem signal and ground con-

nections are made through the AMP connector.

Power Plug

The power plug connects directly to the modem’s AC

adapter jack. This plug delivers AC voltage to the modem

when the

MicroTech

controller is powered up.

Note: The modem must be powered up with the con-

troller. The modem cannot use a separate power supply.

34-Pin Call Initiate Connector

The

34-pin

call initiate connector attaches to the Analog

Inputs socket in a

MicroTech

controller when the controller

initiates calls through the modem. This feature is used only

when the modem is connected to a Modem Alarm Unit

(MAU).

WorldPortTM

High Speed Modems User’s Guide:

(Skokie, IL: US Robotics@, Inc.

1993),

p. l-5

Power Plug (To AC Adapter Jack)

To Extension Cable---

(To MicroTech Controller

PoR

Power Wire

To 12-l 7VDC Source

34-Pin Call

.--

Initiate Connector

Pin 1

IM 564

Page 4

Installation

The installation procedure for the modem kit consists of the

interface cable to the controller, and connecting cables,

following: mounting the modem to a controller, wiring the

connectors, and the phone line to the modem.

Mounting the Modem

To mount the modem in a control panel, use the mounting

packet provided with the modem kit.

A U-shaped bracket or an L-shaped bracket included in

Figure 4. Modem Dimensions

the packet fits around the modem and holds it in place in

the panel. Because of the shape of the modem, a

X-inch

thick foam gasket is placed between the bracket and the

modem. Locate an area in the panel that will fit the

bracket’s screw holes. Refer to the product-specific installa-

tion manuals for details on where the modem should be

mounted. Place the modem and foam gasket inside and the

U-shaped or the L-shaped bracket. Secure the modem and

bracket to the panel or controller by using the screws

provided.

Note: Make sure that the

LEDs

on the modem are fac-

ing out.

Wiring the Interface Cable

Wiring the interface cable involves finding the power source

for the power wire. The red power wire must be connected

to a 12-l 7 VDC power supply inside the

MicroTech

Panel.

Can cause damage to the controller.

Voltage surge or short.

Power to the controller should be turned off when con-

necting the power wire to prevent shorting out the power

supply or having a sudden voltage surge.

NMP,

RMS, or RMC controllers, pin 8 on the

AUX/OUT

connector strip will provide approximately 13

VDC (see Figure 5). A factory wired pigtail on the

AUX/OUT

connector with a crimp-style socket is provided. The power

wire is then inserted into the pigtail socket and crimped.

If the

MicroTech

Panel has a field wiring terminal that is

connected to a 12-l 7 VDC power supply, the power wire is

connected to that terminal. Refer to Table 4 for power sup-

ply field wiring terminals in the various

MicroTech

control-

lers that supply

12-1

7 VDC.

3.8”

Table 4. Power Supply Terminals (12-l 7 VDC)

Applied Rooftop

Screw chiller

Reciprocating chiller

Centrifugal chiller

Application Specific Controller

(AX)

Self-contained Air Conditioning (SCAC)

Loop Water Controller (LWC)

Chiller Plant Controller

Series 200 Application Specific Controller

TB6-42

TB4-41

TB7-146

Terminal 67

TB3-25

TB3-26

12 VDC terminal

TS2-13

(ASC-200)

13 VDC teninal

Chiller System Controller

13 VDC terminal

Note: Measure the voltage at the field wiring terminal

before

connecting the power wire to ensure the proper

voltage is present.

Page 5

IM 564

Connecting the Cables and Connectors

There are several connections that take place once the

interface cable wiring is complete. They are as follows:

interface and extension cables, AMP connector, power

plug, and the 34-pin call initiate connector (if necessary).

Interface Cable/Extension Cable

Both the interface cable and the extension cable have

9-pin

connectors. The interface cable has a nine-pin male con-

nector that fits into the extension cable’s female connector.

Place both cable connectors so that the pins on the male

connector align with the sockets on the female connector.

Slide the two connectors together and secure them by

tightening the screws on the extension cable connector.

Note: Be careful when tightening the screws on the

connector. Do not turn one screw more than two rotations

before turning the other screw. This will prevent damage to

the pins and the connectors.

AMP Connector

The AMP connector attaches to the communication port A

of a

MicroTech

controller (see Figure 4). Align the AMP

connector with the port A connector on the

MicroTech

con-

troller. Insert the AMP connector into port A. The AMP con-

nector included with the kit will connect with all modem

compatible

MicroTech

controllers except the Application

Specific Controller (ASC). The ASC has a Phoenix-type

connector. If the modem is connected to an ASC, an

adapter cable must be used to connect to port A. The

adapter cable is available by purchasing the

MicroTech

Communications Cable Kit.

Note: The AMP connector must be connected to the

controller before the modem will operate. The modem sig-

nal and power ground connections are made through the

AMP connector.

34-Pin Call Initiate Connector

The 34-pin call initiate connector plugs into the Analog

Inputs port of a Modem Alarm Unit (MAU) controller. If the

modem is not connected to a MAU, coil the unused cable

and secure it to the interface cable housing.

Power Plug

The power plug connects to the AC adapter jack on the top

of the modem. Insert the male end of the power plug into

the AC adapter jack on the modem. This allows voltage to

get to the modem when all other conditions have been met.

Phone Jack

The phone jack is the modem’s outside communications

port. A telephone line connects to the jack so that outside

communications can take place. Align the telephone line

connector with the phone jack on the modem. Push the

telephone line connector into the jack until a clicking sound

is heard. This clicking sound ensures that the telephone

line connector is secured in place inside the phone jack.

Figure 4. MicroTech Controller (200 Series)

AUWOUT CONNECTOR STRIP

Modem Configuration

The modem configuration consists of the port speed, con-

nect speed, and configuration string. The modem configu-

ration is set at the factory and should be ready for use.

Port/Connect Speed

Changing Con

troller

Port Configuration

The port speed is the speed at which the modem talks to

the

MicroTech

controller. The connect speed is the speed at

which the modem first communicates and then connects to

the

MicroTech

port. The port speed follows the connect

speed when flow control is off. For example, if you call into

the modem at 2400 bps, even though the modem is a

14.4K

bps, it will automatically switch the connect and port

speeds to 2400 bps.

MicroTech

controller’s port can be set to 300, 1200,

2400, 4800, and 9600 bps (bits per second). If you want to

leave the

MicroTech

controller port speed at the current

setting, you must know that setting when calling into the

modem.

The controller port configuration can be changed in three

different ways. The first is by direct changing on a control-

ler’s keypad display. The second is from a Monitor package

“user screen.” The third way is by a detailed procedure

using the Monitor program.

When using a Remote Monitoring and Sequencing Panel

(RMS) or a Remote Monitoring Control Panel (RMC), the

keypad display can be used to change the port configu-

ration. Refer to Bulletin NO. OM 118 (RMS) or Bulletin NO.

OM 121 (RMC) for more information.

IM 564 I Page 6

Also, some Monitor packages allow the changing of the

port configuration from a “user screen.” Consult your Moni-

tor user’s manual or contact your McQuay Service repre-

sentative for more details.

If you do not have the ability to change the port con-

figuration by the use of a keypad or a “user screen,” perform

the following procedures.

Setting up Communications

Use a PC with the appropriate Monitor software.

Directly connect an IBM compatible PC to port A of the

controller by using the PC cable from the PC Commu-

nications Cable Kit. The PC Communications Cable Kit

is available from McQuay International.

Access the

MicroTech

Monitor software by typing run

at the

(C:\>)

prompt.

Press <Enter>.

Press <Enter> at the prompt, “Press

<Esc

to bypass

Communications Initiation,

<Enter>

to continue..:’

This will begin communications between the PC and

the controller.

Note: If communications does not begin, contact

your McQuay Service representative for more detailed

information.

Reading the Port A Speed

Once communications begin, the Main Menu appears on

the PC screen.

Press F7 Support Menu to access the Support Menu.

Press

Read/Write Memory from the Support Menu.

This will bring up the Read/Write Memory screen.

Type “B” followed by the address of the controller you

are connected to. This sets up the box address. For

example: If you are connected to the level-l controller,

type in B0000. The address

“00.FF”

will also work for

direct connection.

Type in R8010 for a 100 series controller or

R0A10

for

a 200 series controller to find the controller port speed.

Refer to the lists below for more information on 100

and 200 series controllers.

100 Series Controller

Chiller Plant Controller (CPC)

Application Specific Controller (ASC)

Centrifugal Chiller Unit Controller

200 Series Controller

Network Master Panel (NMP)

Application Specific Controller 200 (ASC-200)

Loop Water Controller (LWC)

Remote Monitoring and Sequencing Panel (RMS)

Remote Monitoring and Control Panel (RMC)

Chiller System Controller Panel (CSC)

Self-contained Air Conditioning Unit Controller

Reciprocating Chiller Unit Controller

Screw Chiller Unit Controller

Applied Rooftop Unit Controller

Writing the new Port A Speed

The speed of the controller port will be shown in a hexa-

decimal form such as

9B.

The first digit (9) is the port B

speed and the second digit (B) is the port A speed. See

Table 5.

Type

W8010

for a 100 series controller or

W0A10

for a

200 series controller to change the controller port

speed.

A prompt on the screen will ask, “New Value for

00.00 (Box Address), 8010 or

[0A10]

(Memory Lo-

cations) or <ENTER> for no change.”

Select the speed needed using Table 5.

If the port speed was originally B6, the speed of

port A would be 1200. If the speed of port A should be

9600, you would type BB. This would set the port

speed to 9600 baud.

Type the new port speed (for example, BB).

Press <Enter>.

Never change the port B baud rate.

Will cause loss of communications with the network.

The users should not change the port B baud rate under

any circumstance or they will lose communications with

the rest of the network.

Table 5. Controller Communications Port Speeds.

I”~’

msi

Rarte

,,,;.i--

-1

300

1200

2400

4800

Resetting the Software

After entering the port speed, the controller needs to be

reset. The controller can be reset by performing a Software

Reset. Perform the execution of the Software Reset on the

Read/Write screen.

Type

W0204

(program code for Software Reset).

Press

<Enter>.

A prompt on the screen will ask, “New

Value for 00.00 0204 or <ENTER> for no change.”

Type an even number (0,2,4,6...) at the command. An

even number allows the program to reset and keep

running, an odd number (1,3,5...) stops the program

from running.

Press <Enter>. This stores the new port speed.

Correcting the Checksum

After the new port speed is stored, the Program Checksum

needs to be corrected. The Program Checksum must match

the EOS Checksum in order for the program to run. Perform

the following steps to change the Program Checksum.

These steps are also performed from the

Read/Write

screen.

Type R8002 (100 series controller) or ROA02 (200

series controller) to read the EOS Checksum. The EOS

Checksum is shown in hexadecimal form. Write down

or remember the EOS Checksum.

Page 7

IM 564

Type

W8001

(100 series controller) or

0A01

(200 se-

ries controller) to change the Program Checksum. A

command on the screen will ask, “New Value for

00.00

W8001

[0A01]

or <ENTER> for no change.”

Type the same hexadecimal value that was displayed

for the EOS Checksum.

Press <Enter>.

After entering the new Program Checksum, the

controller needs to reset. Follow the same Software

Reset procedure listed in steps 1-4 in the “Resetting

the Software” section above.

Press the F10 key to exit the Monitor program.

The modem configuration string is an AT command that

allows the modem to be compatible with

MicroTech

control-

lers. This configuration is set at the factory. If a problem with

configuration occurs, the configuration string may need to

be reset. To reset the string, a PC using the correct com-

munications software is needed. Refer to the US Robotics,

WorldPort User’s Guide for more information on resetting

the string.

The following AT command is used to configure the

modem:

AT&FS0=1

B0Q1

E0&D0&W.

Table 6 explains

each command of the string.

&IL

Table 6. AT Command Definitions

Note: For high speed modems, flow control must be

disabled to make the modems

MicroTech

compatible. In the

WorldPort

14.4K

modem, flow control is disabled as a fac-

tory default. No additional configuration is needed beyond

AT&F.

Remote Access

Using a PC and communications software, the modem can

be set up to be configured by a remote modem. This can be

helpful in troubleshooting modem operations. This enables

the user to call into the modem from a remote site and

change the configuration. For complete instructions on how

to perform Remote Access, refer to the US Robotics

WorldPort

High Speed Modems User’s Guide (Appendix E).

564

Page 8

Troubleshooting Power Problems

The modem interface cable receives 12-17 VDC from the

MicroTech

controller. A red power wire connects directly to

the

MicroTech

controller. A power plug on the interface

cable delivers AC voltage to the modem. If a problem with

powering up the modem occurs, the following troubleshoot-

ing items may help repair the problem.

The Modem Does Not Power Up.

Cause:

The red power wire is not connected to a 12-17

VDC supply in the

MicroTech

controller.

Solution: Refer to the product-specific installation manuals

to find a proper voltage supply in the

MicroTech

controller.

Cause:

The red power wire is improperly connected to

the

MicroTech

controller voltage supply.

Solution: Check the connection to the power supply.

Cause:

The power plug is not connected to the modem.

Solution: Connect the power plug to the AC adapter jack

on the modem.

Cause:

The interface cable internal wiring may be mis-

wired or have a poor solder/connection point at

the power plug.

Solution: Measure the resistance (ohms) with a DVM

(Digital Voltmeter) to verify the correct wiring.

Cause:

The AMP connector is not plugged into the

MicroTech

controller’s port A.

Solution: Plug the AMP connector into port A of the

Micro-

Tech controller.

Cause:

The AMP connector is miswired or has a poor

connection.

Solution: Measure the resistance (ohms) using a DVM

(Digital Voltmeter) to verify the correct wiring.

Use the Wiring diagram in Figure 5.

Cause:

The interface cable is not properly connected to

the modem extension cable.

Solution: Reconnect the interface cable to the extension

cable.

Cause:

The interface cable may have a broken or

pushed in male connector pin.

Solution: Disconnect the interface cable and inspect for

broken or pushed in pins.

Troubleshooting Communications

Problems

If communications to the modem is unsuccessful or lost,

the following troubleshooting items may help in repairing

the problem.

The External Computer Cannot Communicate with the

MicroTech

Controller through the Modem.

Cause:

The phone line is not connected to the phone

jack on the modem.

Solution: Connect the phone line to the modem’s phone

jack.

Cause:

The AMP connector is not properly connected to

the

MicroTech

controller’s port A.

Solution: Reconnect the AMP connector to port A of the

controller.

Cause:

The AMP connector is miswired or has a poor

connection.

Solution: Measure the resistance (ohms) using a DVM

(Digital Voltmeter) to verify the correct wiring.

Use the wiring diagram in Figure 5.

Cause:

The connect/port speed does not match the

MicroTech

controller’s port speed.

Solution: Retry connect speeds until the proper speed is

found.

Cause:

The configuration string of the modem is

incorrect.

Solution: Re-enter the configuration string using a PC and

the correct communications software (see Table

5).

Cause:

The communications password is incorrect.

Solution: Enter the correct password in the Monitor pro-

gram and try again or contact McQuay Service.

If a problem still exists after performing the trouble-

shooting items, the modem may be defective.

IM 564

Page 10

McQuay MicroTech Installation And Maintenance Data

McQuay MicroTech Installation And Maintenance Data

McQuay MicroTech Installation And Maintenance Data

Related papers

Other documents