Watlow QPAC User Manual

QPAC
User’s Guide
0600-0027-0001 Rev D
Modular SCR
Power Control
150 to 1,000A
Tel: +1 (507) 454-5300, Fax: +1 (507) 452-4507 http://www.watow.com
Made in the U.S.A.
August 2010
How to Use this Manual
Notes
A bold text "NOTE" marks a short message in the margin to alert you to an important detail.
NOTE: Details of a "Note" ap­pear here, on the left side of each page.
ç
CAUTION: Details of a "Caution" appear here, on the left side of each page.
WARNING: Details of a "Warning" appear here, on the left side of each page.
Safety Information
This user's guide also has boldface safety information notes to protect both you and your equipment. Please be attentive to them.
The CAUTION symbol ç (exclamation point) in the wide text column alerts you to a "CAUTION," a safety or functional hazard which could affect your equipment or its performance. A full explanation is in the narrow column on the left side of the page.
The WARNING symbol to a "WARNING," a safety hazard which could affect you and the equipment. A full explanation is in the narrow column on the left side of the page.
(lightning bolt) in the wide text column alerts you
Your Feedback
We welcome comments or suggestions on this manual, please contact:
Technical Writer, Watlow Winona, 1241 Bundy Blvd, P.O. Box 5580, Winona, MN 55987-5580. Phone: 507-454-5300; Fax: 507-452-4507. The QPAC User's Guide is copyrighted by Watlow Winona, Inc. © August 2010 with all rights reserved.
Technical Assistance
If you encounter a problem with your Watlow controller, review your congu­ration information to verify that your selections are consistent with your appli­cation: inputs, outputs, alarms, limits, etc. If the problem persists, you can get technical assistance from your local Watlow representative (see back cover), by e-mailing your questions to wintechsupport@watlow.com or by dialing +1 507-494-5656 between 7 a.m. and 5 p.m., Central Standard Time (CST). Ask for for an Applications Engineer. Please have the following information avail­able when calling:
• Complete model number • All conguration information
• User's Guide • Serial Number
The model, part number, and serial numbers can be found on the label on the outside of the case.
How to Read the QPAC Model Number
The QPAC model number provides phase, supply voltage, amperage and control type information, in that order. For example:
Fan Cooled 150Amp (150A @ 480V 480VÅ (ac) Supply Burst Fired, Variable Time Base
3-Phase 2-Leg Open Heater, Shorted SCR Detector
Å (ac), 3-phase)
Q32-481-150-BV2
Refer to the model number breakdown in the Model Number Information chart in the Appendix for a complete listing.
2 QPAC User's Guide
How to Use this Guide
Contents
Table of Contents
Chapter 1
Starting Out With The QPAC Power Control 4
General Description 4 Steps To Put Your Power Control To Work 5
Chapter 2
How to Install and Wire the QPAC 6
System Planning 6 Mounting the QPAC 6 Input Signal Wiring 14 CA Control Card — AC Input Contactor 14 CD Control Card — DC Input Contactor 14
Process Input - AF, AL, BF and BV Control Cards 15 AF, AL, BF and BV Potentiometer Input 15 CD Control Card — Contact Closure Input Contactor 15 AF, AL, BF and BV DC Input Connections 16 AF, AL, BF and BV Auto/Manual Input 16 Interlock 16 Soft Start 17 AL Control Card Current Transformer Connections 17 Single- and Three-Phase Current Transformer Wiring 19 DH Card Operation — Heater Diagnostics 19 Setup Procedure 19 QPAC system Wiring Example 20
Chapter 3
How to Operate the QPAC 21
Setup Adjustments 21 Phase Rotation Adjustment for Q32 and Q33 21 Bias And Gain Adjustments for AF, AL, BF, BV 21 Current Limit Adjustments 23
Appendix
QPAC Troubleshooting 24 Specic to QPAC-33 Diagnostics 25 QPAC Specications 26 Model Number Information 28 Accessories 29 Warranty 31 Returns 31
QPAC User's Guide 3How to Use this Manual
Starting Out
The Q32 SCR Power Control.
Chapter 1
Starting Out With The QPAC Power Control
General Description
The QPAC Power Controls are a family of solid-state controls used for elec­tric heating applications. A solid-state power control provides output power that is proportional to the input command signal from a temperature control. This proportional output power helps to produce a closely controlled heater temperature, which saves energy and prolongs heater life by holding heater elements at a nearly constant temperature.
The QPAC has a modular construction with plug-in features for exibility. The three modules of the QPAC are the Power Base, Transformer and Control Card. See the QPAC Modularity Overview below. Power Bases are available in 150 to 1,000A ratings with UL508 listed and cULus in single­phase, three-phase two-leg and three-phase three-leg congurations. A Transformer plugged into the Power Base allows the QPAC to operate
4 QPAC User's Guide Chapter 1: Starting Out
Starting Out
Control Cards
• Solid-state contactor, ac input, CA
• Solid-state contactor, dc input, CD
• Burst ring (zero cross) xed time base, BF
• Burst ring (zero cross) variable time base, BV
• Phase angle control, AF *
• Phase angle control with current limiting, AL *
* Note: For 1Ø and 3Ø, 3-leg controls only; not for
3Ø, 3-leg controls.
Plug-in transformers (50/60 Hz.)
QPAC Modularity Overview.
• 120VÅ (ac)
• 208/240VÅ (ac)
• 380VÅ (ac)
• 415VÅ (ac)
• 480VÅ (ac)
• 575VÅ (ac)
Power Bases With Motherboards
• QPAC-01: 1Ø, 150 to 1,000A
• QPAC-32: 3Ø, 2-leg, 150 to 1,000A
• QPAC-33: 3Ø, 3-leg, 150 to 1,000A
on any voltage from 120 to 575VÅ (ac). The plug-in Control Card sets the QPAC’s ring mode. Control Cards are available in solid-state contactor, burst ring (zero cross) or phase angle ring with a wide variety of options. This modular approach, using a standard Power Base with plug-in transformers and Control Cards, allows power control users, distributors and OEMs to maintain minimum inventories while still providing rapid service.
The different QPACs provide the types of power control needed for differ­ent power sources and loads. The QPAC-01 is designed for all single-phase power sources and loads. The QPAC-32 is for three-phase zero cross ap­plications such as resistance heating elements, balanced or unbalanced. The QPAC-33 is best suited for balanced three-phase, phase angle applications requiring soft start or current limiting, or with inductive loads.
QPAC User's Guide 5Chapter 1: Starting Out
Steps To Put Your Power Control To Work
To put your QPAC to work, we suggest the following steps:
• Read the User's Guide.
• Plan your installation and wiring.
• Mount the QPAC.
• Wire your QPAC to the system.
• Start the system and, if applicable, adjust the bias and gain on the QPAC.
• That's all there is to it!
Mounting
WARNING: To avoid potential electric shock and other hazards, all mounting and wiring for the QPAC must conform to the National Electric Code (NEC) and other locally applicable codes.
Chapter 2
How to Install and Wire the QPAC
System Planning
This chapter tells you how to install the QPAC. All mounting and wiring information is right here. Watlow power controls are thoroughly tested before leaving the factory, so the QPAC is ready to install when you receive it.
This chapter is divided into three sections that describe the three steps to installing the QPAC: mounting, power wiring and control card wiring. The rst section lists the mounting information for each of the three types of QPACs, which, depending on amperage, use one of two case styles. The second section describes the power and load wiring of the QPACs and semiconduc­tor fuses, if required. The last section describes the input signal wiring to the QPAC Control Card.
Before you begin working, read through this chapter to gain an under­standing of the entire installation. Consider the installation carefully. Plan the power, load and input signal wiring before mounting the QPAC. Also refer to any noise guidelines in the temperature control documentation before proceeding.
Mounting the QPAC
The physical size and mounting dimensions of the QPACs are different for different current ratings. Find the "Case Style" photo on the next pages that match your QPAC. The table and gure accompanying each case style will give you corresponding physical dimensions and mounting footprint. The table also indicates if the units are equipped with fans and externally-mount­ed fuses. All QPACs must be mounted vertically, power connections on top, for proper cooling. Use the wiring data table below for wire sizes and bending radii.
6 QPAC User's Guide Chapter 2: Install & Wire
Mounting
7.9mm
(5/16 in - 18)
5.7mm
(0.225 in)
25.4mm (1.00 in)
13.5mm (0.53 in)
9.7mm
(0.38 in)
Template for Fuse Holders with QPAC 150A, 575V.
3.8mm
(0.15 in)
88.9mm (3.50 in) minimum
106.4mm (4.19 in) maximum
19.1mm (0.75 in)
Top View
31.8mm (1.25 in)
Top View
40.4mm (1.59 in)
Ensure nut and washer are used below and above fuse
Right Side View
21.1mm (0.83 in)
9.5mm
(0.375 in - 16)
Right Side View
Template for Fuse Holders with QPAC 200 and 300A, 575V.
QPAC User's Guide 7Chapter 2: Install & Wire
152.0mm (6.00 in)
103.17mm (4.062 in)
9.7mm
(0.38 in) Typical
50.8mm (2.00 in)
24.6mm (0.97 in)
50.8mm (2.00 in)
12.7mm (0.50 in)
Ensure nut and washer are used below and above fuse
12.7mm (0.50 in)
25.4mm (1.00 in)
7.1mm
(0.281 in)
330mm
(13.00 in)
178mm
(7.00 in)
10mm (0.38 in) 2 PL
FAN
U P
MOUNT
89mm
(3.50 in)
299mm
(11.75 in)
92mm (3.63 in)
Case Style C
Mounting
QPAC Case Style C.
QPAC Case Style C Overall Dimensions.
ç
CAUTION: Mount the QPAC vertically (height dimension vertical) for proper cooling. Failure to do so could result in power control malfunction.
Model Amps Height Width Depth Fans Fuses
QPAC-01
QPAC-01
QPAC-01
QPAC-32
QPAC-32
QPAC-32
QPAC-33
QPAC-33
QPAC-33
Note: On 575 V~(ac) applications, the fuses are mounted external to the QPAC.
150
330mm (13 in)
200
330mm (13 in)
300
330mm (13 in)
150
330mm (13 in)
200
330mm (13 in)
300
330mm (13 in)
150
330mm (13 in)
200
330mm (13 in)
300
330mm (13 in)
175mm (6.9 in)
175mm (6.9 in)
175mm (6.9 in)
348mm (14.0 in)
348mm (14.0 in)
348mm (14.0 in)
533mm (21.0 in)
533mm (21.0 in)
533mm (21.0 in)
260mm (10.25 in)
260mm (10.25 in)
260mm (10.25 in)
260mm (10.25 in)
260mm (10.25 in)
260mm (10.25 in)
260mm (10.25 in)
260mm (10.25 in)
260mm (10.25 in)
1
on heat sink
1
on heat sink
1
on heat sink
2
on heat sink
2
on heat sink
2
on heat sink
3
on heat sink
3
on heat sink
3
on heat sink
WARNING: Shock Hazard Heatsinks are electrically Live.
QPAC Case Style C, QPAC-01, 150, 200, 300A Single-Phase Mounting Footprint.
ç
8 QPAC User's Guide Chapter 2: Install & Wire
Case Style C
92mm
(3.63 in)
533mm
(21.00 in)
4 PL
P
U
MOUNT
FAN
FAN
16mm
(0.63 in)
298mm
(11.75 in)
33mm
(13.00 in)
178mm (7.00 in)
10mm (0.375 in)
FAN
178mm (7.00 in)
Mounting
178mm (7.00 in)
356mm
(14.00 in)
89mm
(3.50 in)
16mm
(0.63 in)
QPAC Case Style C, Q32, 150, 200, 300A, 3-Phase, 2-Leg Mounting Footprint.
ç
CAUTION: Mount the QPAC verti­cally (height dimension vertical) for proper cooling. Failure to do so could result in power control malfunction.
WARNING: Shock Hazard Heatsinks are electrically Live.
FAN
U P
MOUNT
FAN
10mm (0.375 in)
4 PL
298mm
(11.75 in)
33mm
(13.00 in)
∫ ç
∫ ç
QPAC Case Style C, Q33, 150, 200, 300A, 3-Phase, 3-Leg Mounting Footprint.
QPAC User's Guide 9Chapter 2: Install & Wire
Case Style E
Mounting
QPAC Case Style E.
QPAC Case Style E Overall Dimensions.
Model Amps Height Width Depth Fans Fuses
QPAC-01
QPAC-01
QPAC-32
QPAC-32
QPAC-33
QPAC-33
400 to 600
800 to 1,000
400 to 600
800 to 1,000
400 to 600
800 to 1,000
685mm (27 in)
685mm (27 in)
685mm (27 in)
840mm (33 in)
840mm (33 in)
840mm (33 in)
430mm (17 in)
430mm (17 in)
535mm (21 in)
535mm (21 in)
685mm (27 in)
685mm (27 in)
300mm (11.7 in)
340mm (13.3 in)
300mm (11.7 in)
340mm (13.3 in)
300mm (11.7 in)
340mm (13.3 in)
111 on-board
1 on-board
222 on-board
2 on-board
333 on-board
3 on-board
ç
CAUTION: Mount the QPAC verti­cally (height dimension vertical) for proper cooling. Failure to do so could result in power control malfunction.
WARNING:Shock Hazard Heatsinks are electrically Live.
QPAC Case Style E Mounting Footprint.
22mm (0.88 in)
Width
L1 L2 L3
U P
MOUNT
T1 T3
FAN
ELECTRONICS
PACKAGE
(Signal Connects Inside)
FAN
Height
GROUND
Fan Voltage Input
22mm (0.88 in)
12.7mm (0.5 in)
10 QPAC User's Guide Chapter 2: Install & Wire
Wiring
QPAC Wiring Data.
Load Current (amps)
Semiconduc­tor Fuse Rat-
ing (amps.)
150 200 3/0 102mm (4 in) 4 to 3/0 *onboard 240 in/lb 3/16 in
200 250 250 MCM 114 mm (4.5 in) 6 to 350 MCM *onboard 375 in/lb 3/8 in
300 400 500 MCM 203 mm (8 in) 4 to 500 MCM *onboard 375 in/lb 3/8 in
400 500 Dual 350 MCM 380mm (15 in) 2 to 600 MCM onboard 500 in/lb 1/2 in
500 600 Dual 350 MCM 380mm (15 in) 2 to 600 MCM onboard 500 in/lb 1/2 in
600 800 Dual 500 MCM 380mm (15 in) 2 to 600 MCM onboard 500 in/lb 1/2 in
800 1,000 Quad 250 MCM 380mm (15 in) 2 to 600 MCM onboard 375 in/lb 3/8 in
1,000 1,250 Quad 350 MCM 380mm (15 in) 2 to 600 MCM onboard 375 in/lb 3/8 in
Minimum
Recommended
Wire Size
Bending Radius Wire Sized that
Lugs Accept
Fuse
Mounting
Lug
Torque
*The fuses are external in Style C power controls over 575VÅ (ac).
Internal
Allen
Wrench
QPAC User's Guide 11Chapter 2: Install & Wire
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