Watlow 8PID User Manual

WATLOW ANAFAZE 8 PID CONTROLLER

Installation And Operation Manual

Revision 5

March 26, 1987

ANAFAZE 8 PID Serial Numbers P2000 and higher

Watlow Anafaze

344 Westridge DR

Watsonville, CA 95076

Phone: 831-724-3800

Fax: 831-724-0320

Copyright (c) 1987-1988. All RIGHTS RESERVED: No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form by any means; electronic, mechanical, photo copying, recording, or otherwise, without the prior written permission of Watlow Anafaze

Printed in U.S.A.

STATEMENT OF WARRANTY

ANAFAZE, Incorporated warrants that the Products furnished under this Agreement will be free from material defects in material and workmanship for a period of 90 days from the date of shipment. The customer shall provide notice to ANAFAZE, Incorporated of any such defect within one week after the Customer's discovery of such defect. The sole obligation and liability of ANAFAZE, Incorporated under this warranty shall be to repair or replace, at its option, without cost to the Customer, the product or part which is so defective and as to which such notice is given.

Upon request by ANAFAZE, Incorporated, the product or part claimed to be defective shall immediately be returned at the Customer's expense to ANAFAZE, Inc. Replaced or repaired products or parts will be shipped to the Customer at the expense of ANAFAZE, Incorporated

There shall be no warranty or liability for any products or parts which have been subject to misuse, accident, negligence, failure of electric power or modification by the Customer without ANAFAZE, Incorporated's approval. Final determination of warranty eligibility shall be made by ANAFAZE, Incorporated. If a warranty claim is considered invalid for any reason, the Customer will be charged for services performed and expenses incurred by ANAFAZE, Incorporated in handling and shipping the returned unit.

As to replacement parts supplied or repairs made during the original warranty period, the warranty period of the replacement or repaired part shall terminate with the termination of the warranty period with respect to the original product or part.

THE FOREGOING WARRANTY CONSTITUTES THE SOLE LIABILITY OF ANAFAZE INCORPORATED AND THE CUSTOMER'S SOLE REMEDY WITH RESPECT TO THE PRODUCTS AND IS IN LIEU OF ALL OTHER WARRANTIES, LIABILITIES AND REMEDIES. EXCEPT AS THUS PROVIDED, ANAFAZE, INC. DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

PLEASE NOTE EXTERNAL SAFETY DEVICES MUST BE USED WITH THIS EQUIPMENT SEE WARNING ON NEXT PAGE.

WARNING

ANAFAZE HAS MADE EFFORTS TO ENSURE THE RELIABILITY AND SAFETY OF THE ANAFAZE 8 PID CONTROLLER AND PROVIDE RECOMMENDATIONS FOR ITS SAFE USE IN SYSTEMS APPLICATIONS. PLEASE NOTE THAT IN ANY APPLICATION, FAILURES CAN OCCUR THAT WILL RESULT IN FULL CONTROL OUTPUTS OR OTHER OUTPUTS THAT MAY CAUSE DAMAGE OR UNSAFE CONDITIONS IN THE EQUIPMENT OR PROCESS CONNECTED TO THE ANAFAZE 8 PID.

GOOD ENGINEERING PRACTICES, ELECTRICAL CODES, AND INSURANCE REGULATIONS REQUIRE INDEPENDENT, EXTERNAL, SAFETY DEVICES BE USED TO PREVENT POTENTIALLY DANGEROUS OR UNSAFE CONDITIONS ASSUMING THAT THE ANAFAZE 8 PID CAN FAIL WITH OUTPUTS FULL ON, OR OUTPUTS FULL OFF, OR OTHER CONDITIONS THAT WOULD BE UNEXPECTED.

THE ANAFAZE 8 PID INCLUDES A RESET CIRCUIT THAT WILL SET THE CONTROL OUTPUTS TO ZERO IF THE MICROPROCESSOR RESETS -NORMALLY THE RESULT OF A POWER FAILURE AND POWER RETURN. THE COMPUTER OR OTHER HOST DEVICE SHOULD BE PROGRAMMED TO AUTOMATICALLY RELOAD THE CURRENT ANAFAZE 8 PID OPERATING CONSTANTS, OR SAFE VALUES FOR THE PROCESS, UPON RETURN OF SYSTEM POWER. THE COMPUTER CAN ALSO BE PROGRAMMED TO CHECK PROCESS DATA AND CAUSE ALARMS INCLUDING CONTACT OUTPUTS FOR AUTOMATIC SHUT DOWN TO ASSIST IN PREVENTING DANGEROUS OR UNSAFE CONDITIONS. ANAFAZE WILL BE PLEASED TO PROVIDE APPLICATION ASSISTANCE AND PROGRAMMING IF DESIRED. IN ANY EVENT, THESE SAFETY FEATURES DO NOT ELIMINATE THE NEED TO PROVIDE EXTERNAL, INDEPENDENT SAFETY DEVICES IN POTENTIALLY DANGEROUS OR UNSAFE CONDITIONS.

ANAFAZE ALSO OFFERS AN OPTIONAL EEROM MEMORY THAT WILL STORE COMPUTER ENTERED OPERATING CONDITIONS THAT WILL BE USED BY THE ANAFAZE 8 PID AS INITIAL CONDITIONS AT START-UP. THIS FEATURE STILL DOES NOT ELIMINATE THE NEED FOR APPROPRIATE EXTERNAL, INDEPENDENT SAFETY DEVICES.

TABLE OF CONTENTS

1.0 INTRODUCTION ___________________________________________________1

2.0 SPECIFICATIONS __________________________________________________2

2.1 ANALOG INPUTS _________________________________________________2

2.2 OPERATING PARAMETERS _______________________________________2

2.3 REPORTING PARAMETERS _______________________________________3

2.4 COMMUNICATIONS ______________________________________________3

2.5 CONTROL AND ALARM OUTPUTS ________________________________3

2.6 DIGITAL INPUT OR OUTPUT______________________________________3

2.7 GENERAL _______________________________________________________3

2.8 SUBASSEMBLY IDENTIFICATION _________________________________4

3.0 INSTALLATION ____________________________________________________5

3.1 PHYSICAL CONSIDERATIONS ____________________________________5

3.2 COMMUNICATIONS SET-UP AND CONNECTIONS __________________7

3.3 CONFIGURATION _______________________________________________11

3.4 AC POWER INPUT_______________________________________________12

4.0 ANALOG INPUTS__________________________________________________13

4.1 COMMON MODE VOLTAGE _____________________________________13

4.2 NORMAL MODE VOLTAGE ______________________________________13

4.3 GROUNDING____________________________________________________13

4.4 SOURCE IMPEDANCE ___________________________________________13

4.5 USE OF THE SHIELD CONNECTION ______________________________14

4.6 INPUT CIRCUITS ________________________________________________14

4.7 VOLTAGE INPUTS_______________________________________________15

4.8 THERMOCOUPLE INPUTS _______________________________________15

4.9 CURRENT TRANSMITTER INPUTS _______________________________16

4.10 INFRARED NON-CONTACT TEMPERATURE SENSORS ____________16

4.11 SCALING AND CALIBRATION___________________________________17

4.12 RTD INPUTS ___________________________________________________17

4.13 DIAGRAM OF TYPICAL INPUTS _________________________________18

5.0 CONTROL OUTPUTS ______________________________________________19

5.1 TIME PROPORTIONING VOLTAGE_______________________________19

5.2 ON/OFF VOLTAGE ______________________________________________20

5.3 ANALOG OUTPUT -- VOLTAGE OR CURRENT_____________________20

5.4 ISOLATED ANALOG OUTPUT -- VOLTAGE OR CURRENT __________20

5.5 DIGITAL INPUT _________________________________________________20

5.6 DIGITAL OUTPUTS ______________________________________________20

5.7 ALARM EXPANDER AND DIGITAL I/O ____________________________22

6.0 OPERATION ______________________________________________________23

6.1 ANASOFT-PID___________________________________________________23

6.2 CUSTOM APPLICATION PROGRAMS _____________________________23

6.3 TERMINAL EMULATION WITH THE HOST COMPUTER ___________23

6.4 MANUAL OPERATION WITH HOST COMPUTER __________________24

6.5 APPLICATION SOFTWARE ______________________________________24

7.0 COMMAND STRUCTURE __________________________________________25

7.1 CONTROLLER SELECTION ______________________________________25

7.2 ANALOG INPUT TYPE AND CONTROL SETPOINT _________________25

7.3 CONTROL CONSTANTS__________________________________________26

7.4 ANALOG (CONTROL) OUTPUT ___________________________________29

7.5 DIGITAL INPUT AND OUTPUTS __________________________________31

7.6 ANALOG INPUTS ________________________________________________31

1.0 INTRODUCTION

The ANAFAZE 8 PID is a full-featured, industrial-quality, eight- loop, three-mode controller offering unique shared processing technology in local or distributed systems. Through shared processing, the operational functions are divided: the ANAFAZE 8 PID microprocessor intelligence controls the eight loops while a computer or programmable controller enters control settings and performs other operations as needed.

Up to eight loops can be controlled by each ANAFAZE 8 PID, with separate selection of setpoints, alarm points and control constants. A group of optically isolated measurement circuits accept direct connection of sensors -- including thermocouples, RTD's, infrared non-contact, milliamp, and voltage -- reducing the need for costly isolators or transmitters. Sensor and control cable costs are reduced by installing the controller near the process and using serial communication to the host computer. Plug-in RS-232, RS422, or 20ma current loop interfaces are available at selectable baud rates. Control output for each loop is a separate plug-in board with a choice of time proportioning voltage, on/off output, or analog voltage or current. With the alarm expander option two alarms can be set for each loop with digital outputs on alarm for annunciation or emergency shutdown. Indicator LEDs show the status of each loop, the communication interface, and the AC power.

For simple applications any computer with a serial interface may be used to set the input types, control constants, control setpoints, and alarm levels for each loop. Once set, the ANAFAZE 8 PID functions as a stand-alone controller, with alarm checking on each loop, and the computer need only periodically poll the controller to generate operator displays and to verify correct operation.

ANAFAZE offers ANASOFT which is a menu driven software applications package for IBM PC and compatible computers. Please contact ANAFAZE for additional information.

Up to 32 local or remote ANAFAZE 8 PID controllers can be connected on a single communication line, totaling 256 loops, and multiple lines can be used for very large systems. Since the ANAFAZE 8 PID fully controls each loop, supervision requirements are simplified, thus allowing the use of inexpensive programmable controllers or personal computers.

2.0 SPECIFICATIONS

2.1 ANALOG INPUTS

Number of channels: eight Multiplexing: three wire reed relay, guarded inputs A/D converter: integrating voltage to frequency Loop update: each loop 2 times per second Input isolation: optical coupling Input resolution: 0.02% full scale Temp. coefficient: .025% per degree Measurement accuracy: +0.2% full scale Thermocouple break: up scale standard Standard input types: All are present in every system: select by command

from host, any order, any mix: (a) Thermocouple ranges: *

J T/C: -50F to 1400F K T/C: -110F to 2500F T T/C: -120F to 750F

(b) Voltage and current scaling:

0 to 100% (0 to 50ma, 0 to 10v etc.)

0 to 60mv min, 0 to 100v max: normal

(d) Current input ranges: select resistor to match

above voltage ranges Optional input types: E, S, R, or B T/C RTD Non-contact infrared Temperature Ranges below 0 degrees * Assumes PID temp is 0 to 50 degrees C If otherwise, contact factory.

2.2 OPERATING PARAMETERS

Independently set for each loop from computer or programmable controller.

Input type any standard type (see above), any mix Gain (proportional) 0 to 499 Reset (integral) 0 (off) to 1020 seconds Rate (derivative) 0 (off) to 255 seconds Digital Filter 0 to 15 levels [0-7.5 sec.time const.] Setpoint 0 to span High alarm 0 to span [requires alarm expander] Low alarm 0 to span [requires alarm expander] Control output level automatic, 0-100% or when using manual control 0 to

100% (0.1% resolution). As set from keyboard.

2.3 REPORTING PARAMETERS

The computer can request any of the following for any loop:

Operating parameters: all of the above Analog inputs: sensor input

2.4 COMMUNICATIONS

Types RS-232, RS-422, or 20ma current loop Baud rate jumper selectable, 300 to 9600 Error check full echo of all settings Isolation optical for 20ma, optional for RS-232 Data format standard ASCII Display LED indicates communication active

2.5 CONTROL AND ALARM OUTPUTS

Select up to eight:

Time proportioning: voltage output: pulsed 6VDC at 6ma (or

On/Off)maximum -- for solid state or other relays

Analog: voltage or current: selectable (4 to 20ma, 2 to 10v

etc.)

Display: LED indicates control output is active

2.6 DIGITAL INPUT OR OUTPUT

2 DigitalOutputs: opencollector;

true= < 0.5v @ 4ma false = 5v @ 400ohms

1 Digital Input: true = < 0.5v; false = > 3.5v

2.7 GENERAL

Power input: 120VAC, 60Hz Operating ambient: 0 to 50 C Humidity: 10% to 90%, non-condensing Enclosures: NEMA 4, 12, 13 and others optional Physical: 11.2" wide, 13.25" high, 4" deep Mounting: 4 bolts; 10.25" wide, 12.25" high Weight: approximately 5 pounds

2.8 SUBASSEMBLY IDENTIFICATION

The ANAFAZE 8 PID controller consists of a measurement/processing unit with integral mounting frame, plug-in terminals for field wiring, LED indicators, power supply, and 9 card slots.

ANAFAZE 8 PID MEASUREMENT PROCESSOR UNIT

A8PID-MPU Standard measurement/processing unit A8PID-MPU-IR4 Standard MPU wired for 4 IR inputs A8PID-MPU-IR8 Standard MPU wired for 8 IR inputs A8PID-SIXXX Custom input scaling per input

COMMUNICATION INTERFACES (must select one per MPU)

A8PID-232-N Standard non-isolated RS-232 card A8PID-232-ISO Isolated RS-232 interface card A8PID-422 RS-422 interface card A8PID-20MA 20MA current loop interface card

OUTPUT CARDS (select up to 8 per MPU)

A8PID-TPV Time proportioning DCV A8PID-O/F On-Off DCV A8PID-A/ISO/4-20MA Analog isolated 4-20MA A8PID-A/4-20MA Analog 4-20MA A8PID-A/0-5V Analog 0-5V A8PID-A/0-10V Analog 0-10V

ALARM OUTPUT AND MEMORY CARD (optional one per MPU)

A8PID-AEX Alarm expansion card

CABLES

CA-232M 25' RS-232 cable male computer connector CA-232F 25' RS-232 cable female computer connector CA-AEX 2' 50 pin ribbon cable: AEX to PCB-24

INPUT/OUTPUT ACCESSORIES -- USE WITH AEX

PCB-24 24-position input/output module board PCB-IAC15 120VAC input module PCB-IAC5A 240VAC input module PCB-IDC5N 3.3-60VDC input module PCB-OAC5 120VAC output module 5A SSR PCB-OAC5A 240VAC output module 5A SSR G280D10 280VAC 10A solid state relay SSR G280D45 280VAC 45A solid state relay SSR

SOFTWARE

ANASOFT-PID Software operating program for ANAFAZE 8 PID

3.0 INSTALLATION

There are some precautions that must be observed when installing the ANAFAZE 8 PID:

WARNING-ELECTRICAL SHOCK DANGER It is very important that all signal lines including the power input be disconnected before servicing the ANAFAZE 8 PID. HIGH VOLTAGE MAY BE PRESENT EVEN WHEN POWER IS TURNED OFF.

Since the ANAFAZE 8 PID can make measurements of input signals that are not referenced to ground, the ANAFAZE 8 PID ground and other signal lines can have power line or other high voltage present even if the input power is turned off. This could happen, for example, if a thermocouple was inadvertently shorted to the AC power line.

WARNING - USE CORRECT INSULATION TRIM LENGTH

AND WIRE GAGE The correct insulation trim length is 1/4" or 5mm. Care must be taken to prevent contact between any wires and the case which is grounded. The terminal manufacturer has UL approval for #14 to #30 AWG (American Wire Gage). ANAFAZE recommends using #18 or #20 AWG.

To effectively use the plug-in terminals, the wire insulation should be trimmed so that the wire fits inside the terminal with no bare wire exposed. Stranded wire should be tinned.

WARNING - SUPPORT CABLES Power, input, and output cables should be supported to reduce strain on the connectors and to prevent them from being pulled out of the terminal strips.

3.1 PHYSICAL CONSIDERATIONS

The ANAFAZE 8 PID consists of a single PC board with an aluminum housing. Nine rear slots are provided for plug-in option boards, one for communication and eight for control outputs.

3.1.1 MOUNTING [SEE PHYSICAL LAYOUT ON NEXT PAGE]

WARNING ELECTRICAL SHOCK DANGER Always mount the ANAFAZE 8 PID so that access is controlled to prevent any contact with the terminals. HIGH VOLTAGE MAY BE PRESENT EVEN WHEN POWER IS TURNED OFF.

For optimum performance when directly connecting thermocouple inputs, the terminal strips should be kept horizontal. In addition the unit should be protected from thermal shocks whenever possible. This will minimize any temperature gradients across the terminal strips and result in the highest accuracy.

3.1.2 ENCLOSURES

Different enclosures can be used depending on the environmental protection required.

3.1.3 DETACHABLE TERMINAL BLOCKS

WARNING - ALWAYS CHECK TERMINAL LOCATION AND

ORIENTATION All connections except, for the AC power supply, are made on removable terminal strips. Terminal strip removal is achieved by pulling them directly away from the circuit board. The terminal strips must be carefully installed in the correct position on the circuit with all 10 pins correctly aligned.

3.2 COMMUNICATIONS SET-UP AND CONNECTIONS

The ANAFAZE 8 PID is designed for three types of serial communications: RS232, RS-422, and 20ma current loop. Up to 32 units can be connected on one communication line.

3.2.1 COMMUNICATIONS PROTOCOL

The unit uses standard ASCII codes for characters. Parity is not used since the ANAFAZE 8 PID responds to every command verifying to the host computer that the command has been correctly received. The ASCII format is the most commonly used. It contains one start bit, 8 data bits and one stop bit. The computer manual contains information on how to set- up the parameters for communication. For example using an IBM PC in BASIC the command is:

OPEN "COM1:2400,N,8,1,RS,CS,DS as #1

This statement does the following:

 opens communication port 1  at 2400 baud  with no parity  1 start bit, 8 data bits, 1 stop bit  suppresses RTS (Ready To Send)  ignores CTS (Clear To Send)  ignores DSR (Data Set Ready)  as file #1.

Please see your computer manual for additional details.

Please note that the ANAFAZE 8 PID does not require an automatic LF line feed at the end of each communication. Do not use this feature available in the IBM PC BASIC or any other software package.

3.2.2 COMMUNICATIONS PLUG IN OPTIONS

Communication interfaces plug into slot 1 at the back of the ANAFAZE 8 PID frame. The standard selection includes: RS- 232, RS-422, and 20ma current loop. An optically isolated RS-232 interface is available.

3.2.3 RS-232 Option [Non-Isolated]

The ANAFAZE 8 PID is designed to communicate with the host computer using three wires, thus minimizing the interconnection cost. SEE DIAGRAM:

The ANAFAZE 8 PID transmits data on TXD and receives data on RXD. The host computer TXD output should be connected to the ANAFAZE 8 PID RXD input. The ANAFAZE 8 PID TXD output should be connected to the host computer RXD input. Host computer communication ground should be connected to the ANAFAZE 8 PID communication ground.

Multiple ANAFAZE 8 PID units are connected on the RS-232 line in parallel. The ANAFAZE 8 PID nearest to the computer is connected as described above. Then each Anafaze 8 PID controller is daisy chained wire for wire to the next unit. The next units' TXD is connected to the first units' TXD, RXD to RXD, and ground to ground etc.

Some host computers or other RS-232 devices use additional communication lines that are not required by ANAFAZE 8 PID. These include:

RTS - Ready To Send DSR - Data Set Ready CTS - Clear To Send DTR - Data Terminal Ready

If the host computer uses RTS and CTS or DSR and DTR, these lines should be connected together in pairs [or as shown in the computer manual]. Normally this is done in the RS-232 connector hood at the host computer. Alternately the effect of these lines can be eliminated in software. The ANAFAZE 8 PID is ready to receive data; therefore these lines are not required.

3.2.4 RS-232 NOISE PICK-UP

The RS-232 interface is designed so that all ANAFAZE 8 PID controllers on the same RS-232 interface will be listening on initial power up. None of the units will have control of the TXD line. A command sent through the host computer initializing the desired unit starts proper communication between that ANAFAZE 8 PID and the host computer.

Since the TXD line is not controlled, a high impedance may result, causing some 60Hz or 50Hz noise to be picked-up on the line. The noise may be interpreted as characters by the host computer. This may continue until the first unit is selected. After unit selection, the host computer should clear its input buffer. To prevent this, lower the impedance of the TXD line by connecting a 15K ohm resistor between the host computer RXD line and the -5 or -15 volt communication supply at the host. The reduction in the impedance should be enough to prevent this character pick-up.

3.2.5 RS-422 OPTION

The RS-422 is similar to RS-232 with the exception that the RS-422 requires two balanced lines for transmit and two lines for receive. The lines operate exactly out of phase referenced to +5 and 0 volts, permitting longer interconnect lengths. ANAFAZE 8 PID connections are as follows:

PID COMPUTER

TXD +422 Output (Start bit +5 volts) TXD* -422 Output (Start bit 0 volts) RXD +422 Input RXD* -422 Input GND GND Ground

3.2.6 20ma CURRENT LOOP OPTION

Current loop is recommended for longer cable runs and noisy environments. The ANAFAZE 8 PID current loop is optically isolated. It uses an external power supply for the current loop which is normally included in the device communicating with the controller. Consult ANAFAZE for recommendations.

The connections are shown for a single controller:

Multiple ANAFAZE 8 PIDs' are connected in series. R+ is connected to the first unit TXD and TXD* from the first unit is connected to TXD of the next unit. These serial connections are continued until the last unit is reached. The last unit TXD* is connected to the computer R-. T+ is connected to the first unit RXD and the RXD* is connected to the next unit. The last unit RXD* is connected to the computer T- as shown:

3.2.7 OPTICALLY ISOLATED RS-232 INTERFACE

The optically isolated interface allows connection to computers using RS-232 with additional noise protection. Many computer RS-232 interfaces connect the RS-232 signal ground directly to the computer third wire ground. Thus any power line noise is directly connected to the ANAFAZE 8 PID through the serial interface. In addition if there is common mode voltage between the ANAFAZE 8 PID and the computer this noise will also be coupled into the communication lines. To prevent this problem for RS-232 users, the optically isolated RS-232 interface is recommended. The connections are different from the normal serial interface since the ground is isolated. The connections are as diagrammed:

Multiple ANAFAZE 8 PID's are connected in parallel. The RXD of the first unit is connected to the RXD of the next unit, the RXD* to the RXD*, and the TXD* to the TXD*.

3.3 CONFIGURATION

3.3.1 CONFIGURATION SWITCH

WARNING - TURN OFF POWER BEFORE CHANGING

SWITCH The unit configuration switch is located near the center of the main circuit board. It is a six position DIP switch which is used to set the unit number. The switch functions are:

Position one: Position two:

Position three through six:

units are selected by commands in the format Bab, where "B" is the unit command code,"a" is the unit group select either 1 or 2, and "b" is 0 through F. Unit group 1 or 2 are selected by SW1. Selection of 0 through F is made on the configuration switch according to the following table:

Unit group select 1 or 2

Spare

Selects the unit number using the standard binary code. The

Unit number sw3 sw4 sw5 sw6

0 FFFF 1 FFFO 2 FFOF 3 FFOO 4FOFF 5FOFO 6 F OOF 7 F OOO 8 OFFF 9 OFFO AOFOF BOFOO C OOF F D OOF O E OOOF F OOOO Where O = on and F = off

3.3.2 BAUD RATE SELECTION

WARNING - TURN OFF POWER BEFORE CHANGING BAUD

RATE

Baud rate is selected by positioning a selector jumper on J1 on the main circuit board. The position farthest from the card cage is 600 baud and the positions are then as follows:

600 300 2400 4800 1200 9600

Units are normally shipped from the factory with the baud rate set at 2400 baud. This rate is recommended for most applications.

3.4 AC POWER INPUT

WARNING - POWER MUST BE 110VAC, 60HZ

The ANAFAZE 8 PID requires 110VAC at 60Hz for power input. A power on LED will indicate when power is applied.

WARNING - HIGH VOLTAGE MAY BE PRESENT WHEN

POWER IS DISCONNECTED

3.4.2 POWER CONNECTIONS

The power must be connected according to the terminal labels. The abbreviations are:

GND Third wire ground -- normally Green wire NEU 110VAC Neutral -- normally white wire HOT 110VAC Hot -- normally black wire

3.4.3 POWER FUSE

A 1/4 amp fuse is located beneath the circuit board near the power terminals. Power to the ANAFAZE 8 PID must be removed before changing the fuse.

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