Superior Electric 9T92PVC2 Series User manual

213709-213 Rev F
INSTRUCTIONS
for
Volt-Pac®
Variable Transformer Controller
9T92PVC2 Series
The following models are covered in this manual:
9T92PVC2-1, 9T92PVC2-2, 9T92PVC2-3
Revision D
Superior Electric reserves the right to make engineering changes on all its products. Such refinements may affect
information given in the instructions. Therefore, USE ONLY THE INSTRUCTIONS THAT ARE PACKED WITH THE
PRODUCT.

2
TABLE OF CONTENTS
SECTION PAGE SECTION PAGE
FRONT COVER.................................................... 1
INSPECTION........................................................ 2
UNPACKING............................................... 2
DESCRIPTION ..................................................... 2
GENERAL................................................... 2
CONNECTIONS.......................................... 2
MODEL NUMBER ASSIGNED.................... 2
SPECIFICATION .................................................. 3
OUTLINE ........................................................... 4
CONNECTION ...................................................... 5
CONTROL MODES AND FEATURES .................. 6
SERIAL COMMUNICATION ................................. 7
KEY FUNCTION DESCRIPTION .......................... 7
ASCII COMMUNICATIONS .................................. 8
READ/WRITE COMMANDS AND RESPONSES .. 8
REAR COVER ...................................................... 10
INSPECTION
UNPACKING
When unpacking the unit, examine it carefully for any shipping damage. The "Damage and Shortage" instructions
packed with the unit outlines the procedure to follow if any parts are missing or damaged.
DESCRIPTION
GENERAL
The 9T92PVC2 series of Variable Transformer Controllers can be configured for one to three control channels. Each
channel measures the output voltage from a variable transformer and controls the motor drive on the variable
transformer to control the output voltage to a desired set point within a specified dead band. The unit can be
programmed from an integral keypad or read and programmed remotely via a serial RS-232 port.
CONNECTIONS
Connect the 9T92PVC2 series Variable Transformer Controller as shown on page 5.
MODEL NUMBER ASSIGNED
The model number for each 9T92PVC2 Series Variable Transformer Controller identifies the various characteristics
of that specific unit. All models can measure 4 channels and the number of motor drive the unit can control is
determined by the model number. An RS232 serial interface is standard and an optional RS422 or RS485 can be
provided on special models. The table below lists the characteristics and options for each model number.
Model
Number
Controlled
Motor
Drives
Serial
Interface
9T92PVC2-1 1 RS232
9T92PVC2-2 2 RS232
9T92PVC2-3 3 RS232
9T92PVC2-1B 1 RS422
9T92PVC2-2B 2 RS422
9T92PVC2-3B 3 RS422
9T92PVC2-1C 1 RS485
9T92PVC2-2C 2 RS485
9T92PVC2-3C 3 RS485

3
SPECIFICATIONS
CONFIGURATIONS
Designed for Single Phase 120, 240, or 277 line to neutral
Three Phase 208Y/120, 240Y/138, 380Y/220, 480Y/277 or 600Y/346
INPUT VOLTAGE SIGNALS
Measurement Controlled 0 to 500 VAC Line - Neutral
Instrument Power * 120 VAC @ 5 watts max
*Instrument Power source also supplies motor voltage.
OUTPUT CONTROL
Contact Closure 2 per motor drive
Type Solid State Relay
Contact Ratings 3.0A, 240VAC
DISPLAY
LED, 5 Digits, 0.5”H XXX.X VAC
KEYPAD ENTRY
Increase Manual A
Decrease Manual B
Phase Select C
Function Select D
Enter Selection E
Auto/Manual F
ACCURACY
Voltage Display ±0.4VAC RMS
Serial Data ±0.4VAC RMS
RESPONSE TIME Less than 0.1 sec
ENCLOSURE
Type NEMA 1
Size (H x W x D) 10.0” x 8.0” x 3.0”
ELECTRICAL CONNECTOR PC Board Mount Header and Plug
FUSES
Instrument Power 1/8 Amp
Motor Power, Total 4 Amps

4
OUTLINE

5
CONNECTIONS
A B C

6
CONTROL MODES AND FEATURES
Set Point This is the value to which the unit controls the output of a variable transformer. To enter a
set point, press the “D” key until the display says “A.”, on the left side, Enter a set point and
then press “E”.
Dead Band This is the tolerance around the set point to which the unit will keep the variable
transformer. A dead band of 10 volts means ±5 volts around the set point. To enter a dead
band, press the “D” key until the display says “Ad” on the left side. Enter a dead band in the
form XX.X volts and then press “E”.
“A” Phases A, B & C will all be controlled by the A phase control parameters (set point and
dead band). To enter this mode, press the “D” key repeatedly until “A” appears on the
display and then press the “E” key.
“AbC” Phases A, B & C will be individually controlled by their respective control parameters (set
point and dead band). To enter this mode, press the “D” key repeatedly until “AbC” appears
on the display and then press the “E” key.
“bPASS” Phases A, B, & C will be controlled to a set point equal to the voltage measured on channel
D. The dead band will be set at 1.0V. While in this mode, the display will slowly step
through the instantaneous voltage readings of each phase (A, B, C & D). What is displayed
is not the instantaneous voltage; but instead the difference between the measured voltage
on “D” phase and the set point for the phase that the display is currently showing. To enter
this mode, press the “D” key repeatedly until “bPASS” appears on the display and then
press the “E” key.
“F 50” Used for operation on 50Hz power. To set the unit for 50Hz operation, press the “D” key
repeatedly until “F 50” appears on the display and then press the “E” key.
“F 60” Used for operation on 60Hz power. To set the unit for 60Hz operation, press the “D” key
repeatedly until “F 60” appears on the display and then press the “E” key.
“HI XX” Used for operation with high speed motors (motor speeds less than 10 seconds). XX is a 2
digit number entered from the keypad representing the voltage point above or below the
set point at which slow speed pulsing begins. When the instantaneous voltage is
approaching the set point and reaches this value, the motor transitions from moving
continuously to moving in pulses in an effort to prevent an overshoot of the set point. To
set the unit for a high speed motor, press the “D” key repeatedly until “HI” appears on the
left side of the display; and then enter a 1 or 2 digit numerical value up to 25 representing
volts. Press the ”E” key.
“LO XX” Used for operation with low speed motors (motor speeds greater than 10 seconds). The
explanation on why this is needed can be read in the explanation for “HI XX”. To set the
unit for a low speed motor, press the “D” key repeatedly until ‘LO” appears on the left side
of the display; and then enter up to a 1 or 2 digit numerical value up to 25 representing
volts. Press the “E” key.

7






max.volts25begins.pulsing
speedslowat whichpointsetfromvolts
SERIAL COMMUNICATION
Serial interface is provided which can be used to remotely read and write the following:
READ
Voltage
set point
dead band
control
address
Write
set point
dead band
control
address
keypad lock toggle
Set Point This is the value to which the unit controls the output of a variable transformer. To enter a
set point, press the “D” key until the display says “A.”, on the left side, Enter a set point and
then press “E”.
KEY FUNCTION DESCRIPTION
KEY FUNCTION DESCRIPTION
A Increase Manual With the “A” key depressed, the motor for the selected phase will run in the
increase voltage direction. The instantaneous voltage display must be
selected, and the unit must be in manual control mode. If the A phase
parameters are used to control B & C phases (A mode), all three motors will
operate simultaneously.
B Decrease Manual With the “B” key depressed, the motor for the selected phase will run in the
decrease voltage direction, The instantaneous voltage display must be
selected, and the unit must be in manual control mode. If the A phase
parameters are used to control B & C phases (A mode), all three motors will
operate simultaneously.
C Phase Select Pressing the “C” key will cause the display to step to the next phase (A, B, C or
D) making it the active phase.
D Function Select Each press of the “D” key will step to the next function for the active phase.
LED DISPLAY FUNCTION
AXXX.X instantaneous voltage (default)
A.XXX.X set Point
AdXX.X dead band (total, 0.5V min.)
A A mode
AbC AbC mode
bPASS bypass mode
F 60 60Hz
F 50 50Hz
HI XX high speed.
LO XX low speed
After 10 seconds, the selected function will return to the default

8
E Enter Pressing the “E” key will lock in and store data that was entered or shown on
the display i.e., (set point, dead band, frequency, voltage pulse point while in
slow speed).
Pressing the “E” key three times in succession within a span of about 2
seconds will toggle the keypad between locked and active.
F Auto/Manual Pressing the “F” key while the instantaneous voltage mode is displayed will
toggle the selected phase between automatic and manual control modes. In
manual mode the “A” & “B” keys may be used to raise and lower the voltage
for the selected phase. If a phase is in manual mode, its instantaneous voltage
display will flash quickly.
ASCII COMMUNICATIONS
Communication with the 9T92PVC2 series Variable Transformer Controller is a simple ASCII protocol with defined
commands and responses.
Communication Parameters: 9600 Baud, 8 Bits, No Parity, 1 Stop Bit
Message Format: All commands and responses have the same general format. The format is as
follows: STX ADDR CMD (DATA) ETX
STX An ASCII start of text control character, 02 Hex, control B, (^B).
ADDR A meter’s unique character identification (address). A single hexadecimal
character (0-9, A-F).
CMD A two character command for which there is a defined response.
DATA Information associated with the command, or response data as needed; some
commands require no DATA.
ETX An ASCII end of text control character, 03 Hex, control C, (^C).
The command string to the PVC does not contain spaces. Spaces only appear for purposes of readability in the
document. Case sensitivity is not an issue.
READ/WRITE COMMANDS AND RESPONSES
RA (read address)
Cmd: STX 01RA ETX
Rsp: STX ADDR ETX
10 is the universal address to which all controllers respond.
WA (write address)
Cmd: STX ADDR WA X2ETX
Rsp: STX WA ETX
2X is a character 1-9 or A-F representing the unit address.
RC (read control)
Cmd: STX ADDR RC ETX
Rsp: STX ADDR AA3BB3CC3F4Ø5S6XX7ETX
WC (write control)
Cmd: STX ADDR WC AA3BB3CC3F4Ø5S6XX7ETX
Rsp: STX WC ETX
3Two character per channel control code; The first or left most character is used to control the motor when in
manual mode. The letters L, R & O are used respectively to cause the motor to run in the lower voltage direction (L),
raise voltage direction (R) or off(O). The second character is either the letter A or M to put the channel in automatic
control mode (A) or manual control mode (M). The default control codes are motor off in manual mode. i.e. letters
OM

9
4“F” is the single digit 5 or 6 representing powerline frequency of 50Hz or 60Hz.
5“Ø” is either the letter I, S or B causing the phases to be individually controlled (I), controlled from “A” phase (S) or
controlled from “D” phase (B) respectively.
6”S” is either the letter H or L representing high speed (H) or low speed (L) motors.
7XX is a 2 digit number representing the voltage point above or below the set point at which slow speed pulsing
begins.
RD (read dead bands)
Cmd: STX ADDR RD ETX
Rsp: STX ADDR AA.A8BB.B8CC.C8ETX
WD (write dead bands)
Cmd: STX ADDR WD AA.A8BB.B8CC.C8ETX
Rsp: STX WD ETX
8AA.A BB.B CC.C are the channel A, B & C dead band setting; i.e. 00.5, 02.0,10.6
NOTE: When a dead band value is entered, the value represents the entire voltage width of the dead band.
Example: A value of 5.0 is entered - this means ± 2.5V. The dead band minimum is .5V.
RS (read set points)
Cmd: STX ADDR RS ETX
Rsp: STX ADDR AAA.A9BBB.B9CCC.C9ETX
WS (write set points)
Cmd: STX ADDR WS AAA.A9BBB.B9CCC.C9ETX
Rsp: STX WS ETX
9AAA.A, BBB.B, CCC.C are the channel A, B & C voltage set point values. i.e. 002.0, 048.6, 322.9.
RV (read voltages)
Cmd: STX ADDR RV ETX
Rsp: STX ADDR AAA.A10 BBB.B10 CCC.C10 DDD.D10 ETX
10 AAA.A, BBB.B, CCC.C, DDD.D are the channel A, B, C & D voltage values. i.e. 002.0, 048.6, 322.9
KL (keypad lock toggle)
Cmd: STX ADDR KL ETX
Rsp: STX KL ETX
NOTE: This lock method only prevents parameters from being changed. You can still view parameters with the
phase and function select keys. The “E” key lock method prevents the entire keypad from being used except
for the “E” key. In the event that serial communications are lost after the keypad has been locked via the
serial port, a hardware lockout release is provided. Open the front cover and place the calibration jumper in
the calibration position. Press the “E” key three times in succession within a span of 2 seconds to lock the
keypad and perform this proceedure again to unlock both types of keypad locks. If the keypad was originally
locked with the “E” key, the lockout release needs only to be performed once. Be sure to return the
calibration jumper to the “park” position.

10
Available Coast-To-Coast and Internationally
Voltage Control Components
POWERSTAT
®
Variable Transformers
Volt-Pac® Variable Transformers
LUXTROL
®
Lighting Controls
5-WAY
®
Binding Posts
SUPERCON
®
Electrical Connectors
Power Quality Solutions
STABILINE
®
Automatic Voltage Regulators
STABILINE
®
Transient Voltage Surge
Suppressors
STABILINE
®
Uninterruptible Power Supplies
STABILINE
®
Power Conditioners
Voltage Control Components are available worldwide
through an extensive Authorized Stocking Distributor
network. These Distributors offer literature, technical
assistance and a wide range of models off-the-shelf for
fastest possible delivery and service.
STABILINE Power Quality Solutions are available
worldwide through an extensive Authorized Distributor
and Reseller network, which offer literature, technical
assistance and a select range of models off-the-shelf
for fastest possible delivery and service.
In addition, Superior Electric Manufacturer’s Representatives are available to provide prompt attention to customer
needs. Call or fax for ordering and application information or for the address of the closest Manufacturer’s
Representative, Authorized Distributor or Reseller.
Telephone and Fax Numbers
Telephone [phone]
Fax: [phone]
Customer Service: 860-507-2025 Ext. 70782
Product Application 860-507-2025 Ext. 72058
Toll-Free (in U.S.A. and Canada only)
Telephone [phone]
Fax: [phone]
Customer Service: 1-800-787-3532 Ext.
70782
Product Application: 1-800-787-3532 Ext.
72058
One Cowles Road • Plainville, CT 06062
www.superiorelectric.com
The right to make engineering refinements on all products is reserved. Dimensions and other details are subject to change.
213709-213E 9T92PV2-X SERIES mnl.doc
An ISO9000
Registered Company