Superior Electric POWERSTAT FRM2000 Series User manual

213709-214 Rev. E
INSTRUCTIONS
for
POWERSTAT®
Variable Transformer Controller
FRM2000 Series
The following models are covered in this manual:
FRM2000-1, FRM2000-2, FRM2000-3
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
VOLTAGE TABLE................................................ 9
REAR COVER ...................................................... 12
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 FRM2000 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 FRM2000 series Variable Transformer Controller as shown on page 5.
MODEL NUMBER ASSIGNED
The model number for each FRM2000 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
FRM2000-1 1 RS232
FRM2000-2 2 RS232
FRM2000-3 3 RS232
FRM2000-1B 1 RS422
FRM2000-2B 2 RS422
FRM2000-3B 3 RS422
FRM2000-1C 1 RS485
FRM2000-2C 2 RS485
FRM2000-3C 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 D

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 FRM2000 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.
LINE-LINE TO LINE-NEUTRAL VOLTAGE TABLE
If you are sensing L-N and require a L-L voltage the table on the following two
pages will ad in determining what the FRM2000 L-N setting should be.

10
LINE-LINE TO LINE-NEUTRAL VOLTAGE TABLE
VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE
L-L L-N L-L L-N L-L L-N L-L L-N L-L L-N
600 346.4 540 311.8 480 277.1 420 242.5 360 207.8
599 345.8 539 311.2 479 276.6 419 241.9 359 207.3
598 345.3 538 310.6 478 276.0 418 241.3 358 206.7
597 344.7 537 310.0 477 275.4 417 240.8 357 206.1
596 344.1 536 309.5 476 274.8 416 240.2 356 205.5
595 343.5 535 308.9 475 274.2 415 239.6 355 205.0
594 342.9 534 308.3 474 273.7 414 239.0 354 204.4
593 342.4 533 307.7 473 273.1 413 238.4 353 203.8
592 341.8 532 307.2 472 272.5 412 237.9 352 203.2
591 341.2 531 306.6 471 271.9 411 237.3 351 202.6
590 340.6 530 306.0 470 271.4 410 236.7 350 202.1
589 340.1 529 305.4 469 270.8 409 236.1 349 201.5
588 339.5 528 304.8 468 270.2 408 235.6 348 200.9
587 338.9 527 304.3 467 269.6 407 235.0 347 200.3
586 338.3 526 303.7 466 269.0 406 234.4 346 199.8
585 337.7 525 303.1 465 268.5 405 233.8 345 199.2
584 337.2 524 302.5 464 267.9 404 233.2 344 198.6
583 336.6 523 302.0 463 267.3 403 232.7 343 198.0
582 336.0 522 301.4 462 266.7 402 232.1 342 197.5
581 335.4 521 300.8 461 266.2 401 231.5 341 196.9
580 334.9 520 300.2 460 265.6 400 230.9 340 196.3
579 334.3 519 299.6 459 265.0 399 230.4 339 195.7
578 333.7 518 299.1 458 264.4 398 229.8 338 195.1
577 333.1 517 298.5 457 263.8 397 229.2 337 194.6
576 332.6 516 297.9 456 263.3 396 228.6 336 194.0
575 332.0 515 297.3 455 262.7 395 228.1 335 193.4
574 331.4 514 296.8 454 262.1 394 227.5 334 192.8
573 330.8 513 296.2 453 261.5 393 226.9 333 192.3
572 330.2 512 295.6 452 261.0 392 226.3 332 191.7
571 329.7 511 295.0 451 260.4 391 225.7 331 191.1
570 329.1 510 294.4 450 259.8 390 225.2 330 190.5
569 328.5 509 293.9 449 259.2 389 224.6 329 189.9
568 327.9 508 293.3 448 258.7 388 224.0 328 189.4
567 327.4 507 292.7 447 258.1 387 223.4 327 188.8
566 326.8 506 292.1 446 257.5 386 222.9 326 188.2
565 326.2 505 291.6 445 256.9 385 222.3 325 187.6
564 325.6 504 291.0 444 256.3 384 221.7 324 187.1
563 325.0 503 290.4 443 255.8 383 221.1 323 186.5
562 324.5 502 289.8 442 255.2 382 220.5 322 185.9
561 323.9 501 289.3 441 254.6 381 220.0 321 185.3
560 323.3 500 288.7 440 254.0 380 219.4 320 184.8
559 322.7 499 288.1 439 253.5 379 218.8 319 184.2
558 322.2 498 287.5 438 252.9 378 218.2 318 183.6
557 321.6 497 286.9 437 252.3 377 217.7 317 183.0
556 321.0 496 286.4 436 251.7 376 217.1 316 182.4
555 320.4 495 285.8 435 251.1 375 216.5 315 181.9
554 319.9 494 285.2 434 250.6 374 215.9 314 181.3
553 319.3 493 284.6 433 250.0 373 215.4 313 180.7
552 318.7 492 284.1 432 249.4 372 214.8 312 180.1
551 318.1 491 283.5 431 248.8 371 214.2 311 179.6
550 317.5 490 282.9 430 248.3 370 213.6 310 179.0
549 317.0 489 282.3 429 247.7 369 213.0 309 178.4
548 316.4 488 281.7 428 247.1 368 212.5 308 177.8
547 315.8 487 281.2 427 246.5 367 211.9 307 177.2
546 315.2 486 280.6 426 246.0 366 211.3 306 176.7
545 314.7 485 280.0 425 245.4 365 210.7 305 176.1
544 314.1 484 279.4 424 244.8 364 210.2 304 175.5
543 313.5 483 278.9 423 244.2 363 209.6 303 174.9
542 312.9 482 278.3 422 243.6 362 209.0 302 174.4
541 312.3 481 277.7 421 243.1 361 208.4 301 173.8