AC Tech SCL, SCM Operation Manual

MC3000 Series

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Installation and Operation Manual

1.0 GENERAL

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1.1 PRODUCTS COVERED IN THIS MANUAL

This manual covers the AC Tech MC3000 Variable Frequency Drive.

1.2 PRODUCT CHANGES

AC Technology Corporation reserves the right to discontinue or make modifications
to the design of its products and manuals without prior notice, and holds no obligation
to make modifications to products sold previously. AC Technology Corporation also
holds no liability for losses of any kind which may result from this action. Instruction
manuals with the most up-to-date information are available for download from the
AC Tech website. (www.actech.com).

1.3 WARRANTY

AC Technology Corporation warrants the MC Series AC motor control to be free
of defects in material and workmanship for a period of two years from the date
of shipment from AC Tech's factory. An MC Series control, or any component
contained therein, which under normal use, becomes defective within the stated
warranty time period, shall be returned to AC Technology Corporation, freight
prepaid, for examination (contact AC Technology Corporation for authorization prior
to returning any product). AC Technology Corporation reserves the right to make
the final determination as to the validity of a warranty claim, and sole obligation is
to repair or replace only components which have been rendered defective due to
faulty material or workmanship. No warranty claim will be accepted for components
which have been damaged due to mishandling, improper installation, unauthorized
repair and/or alteration of the product, operation in excess of design specifications
or other misuse, or improper maintenance. AC Technology Corporation makes no
warranty that its products are compatible with any other equipment, or to any specific
application, to which they may be applied and shall not be held liable for any other
consequential damage or injury arising from the use of its products.

This warranty is in lieu of all other warranties, expressed or implied. No
other person, firm or corporation is authorized to assume, for AC Technology
Corporation, any other liability in connection with the demonstration or sale
of its products.

1.4 RECEIVING

Inspect all cartons for damage which may have occurred during shipping. Carefully
unpack equipment and inspect thoroughly for damage or shortage. Report
any damage to carrier and/or shortages to supplier. All major components and
connections should be examined for damage and tightness, with special attention
given to PC boards, plugs, knobs and switches.

1.5 CUSTOMER MODIFICATION

AC Technology Corporation, its sales representatives and distributors, welcome the
opportunity to assist our customers in applying our products. Many customizing
options are available to aid in this function. AC Technology Corporation cannot
assume responsibility for any modifications not authorized by its engineering
department.

1

2.0 MC3000 SPECIFICATIONS

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Storage Temperature -20° to 70° C

Ambient Operating Temperature Chassis -10° to 55° C
(With 2.5, 6, and 8 kHz carrier, Type 1 (IP 31) -10° to 50° C
derate for higher carriers) Type 4 (IP 65) -10° to 40° C
Type 12 (IP 54) -10° to 40° C

Ambient Humidity Less than 95% (non-condensing)

Altitude 3300 feet (1000 m) above sea level

without derating

Input Line Voltages 240/120 Vac, 240/200 Vac,

480/400 Vac, and 590/480 Vac

Input Voltage Tolerance +10%, -15%

Input Frequency Tolerance 48 to 62 Hz

Output Wave Form Sine Coded PWM

Output Frequency 0-120 Hz

Carrier Frequency 2.5 kHz to 14 kHz

Frequency Stability

Service Factor 1.00

Efficiency > 97% throughout speed range

Power Factor (displacement) > 0.96

Overload Current Capacity 150% of output rating for 60 seconds

180% of output rating for 30 seconds

Speed Reference Follower 0-10 VDC, 4-20 mA

Control Voltage 15 VDC

Analog Outputs 0 - 10 VDC, or 2 - 10 VDC

Proportional to speed and load

Digital Outputs

+0.00006% / °C

Form C relay: 2 A at 28 VDC or 120 Vac
Open-collector outputs: 40 mA at 30 VDC

2

3.0 MC3000 MODEL DESIGNATION CODE

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The model number of an MC3000 Series drive gives a full description of the basic
drive unit (see example below).

EXAMPLE: M3450BP

(MC3000, 480 Vac, 5 HP, Type 1 Enclosure, with a Remote Keypad Assembly)

M3 4 50 B P

Series:

M3 = M3000 Series Variable Speed AC Motor Drive

Input Voltage:

1 = 240/120 Vac (For 110, 115, 120, 230 and 240 Vac; 50 or 60 Hz)

2 = 240/200 Vac (For 208, 230, and 240 Vac; 50 or 60 Hz)
4 = 480/400 Vac (For 380, 415, 440, 460 and 480 Vac; 50 or 60 Hz)
5 = 590/480 Vac (For 440, 460, 480, 575 and 600 Vac; 50 or 60 Hz)

Rating:

03 = ¼ HP (0.18 kW) 50 / 51 = 5 HP (3.7 kW) 300 = 30 HP (22 kW)
05 = ½ HP (0.37 kW) 75 = 7½ HP (5.5 kW) 400 = 40 HP (30 kW)
10 = 1 HP (0.75 kW) 100 = 10 HP (7.5 kW) 500 = 50 HP (37.5 kW)
15 = 1½ HP (1.1 kW) 150 = 15 HP (11 kW) 600 = 60 HP (45 kW)
20 = 2 HP (1.5 kW) 200 = 20 HP (15 kW)
30 = 3 HP (2.2 kW) 250 = 25 HP (18.5 kW)

Input Phase:

S = Single phase input only.

No character indicates three phase input only

Enclosure Type:

A = Chassis - Open Enclosure with Cover Removed
B = NEMA 1 - General Purpose, vented
C = NEMA 4 - Water-tight and Dust-tight
D = NEMA 12 - Oil-tight and Dust-tight
E = NEMA 4X - Water-tight, Dust-tight, and Corrosion Resistant (Stainless Steel)

Standard Options:

H = Additional Form C Relay circuit board
J = Dynamic Braking circuit board
K = Dynamic Braking & Additional Form C Relay board (not available on all HP sizes - consult factory)

No character when this type of option is not specified

Interface Options:

P = Remote keypad assembly

No character when this type of option is not specified

3

4.0 MC3000 DIMENSIONS

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4.1 CHASSIS AND TYPE 1 ENCLOSED

W

R

Q Q

P

N

HP

(kW)

0.25

(0.18)

(0.37)

INPUT

VOLTAGE MODEL H W D N P Q R S

240 / 120 M3103S 7.50 4.70 3.33 2.35 1.60 1.37 5.50 0.88

240 / 120 M3105S 7.50 6.12 3.63 3.77 1.80 1.37 5.50 0.88

0.5
240 M3205S 7.50 4.70 3.63 2.35 1.90 1.37 5.50 0.88

240/200 M3205 7.50 4.70 3.63 2.35 1.90 1.37 5.50 0.88

Conduit Holes:

S Dia.

0.88" Dia.

S Dia.

Dia. Slot

D

W

U

V

T

Mounting Tab Detail

240 / 120 M3110S 7.50 6.12 4.22 3.77 2.40 1.37 5.50 0.88

1

(0.75)

240 M3210S 7.50 4.70 4.33 2.35 2.60 1.37 5.50 0.88

240 / 200 M3210 7.50 4.70 4.33 2.35 2.60 1.37 5.50 0.88

480 / 400 M3410 7.50 4.70 3.63 2.35 1.90 1.37 5.50 0.88

590 M3510 7.50 4.70 3.63 2.35 1.90 1.37 5.50 0.88

240/120 M3115S 7.50 6.12 4.22 3.77 2.40 1.37 5.50 0.88

1.5

(1.1)

240 M3215S 7.50 6.12 4.22 3.77 2.40 1.37 5.50 0.88

240/200 M3215 7.50 4.70 4.33 2.35 2.60 1.37 5.50 0.88

240 M3220S 7.50 6.12 5.12 3.77 3.30 1.37 5.50 0.88

240 / 200 M3220 7.50 6.12 5.12 3.77 3.30 1.37 5.50 0.88

2

(1.5)

480/400 M3420 7.50 6.12 4.22 3.77 2.40 1.37 5.50 0.88

590 M3520 7.50 6.12 4.22 3.77 2.40 1.37 5.50 0.88

1.00"

R

H

IF W < 7.86"
T = 0.20"
U = 0.34"
V = 0.19"

IF W = 10.26"
T = 0.28"
U = 0.44"
V = 0.24"

4

DIMENSIONS - CHASSIS AND TYPE 1 ENCLOSED (continued)

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HP

(kW)

(2.2)

(3.7)

(5.5)

(7.5)

(11)

(15)

(18.5)

(22)

(30)

(37.5)

(45)

INPUT

VOLTAGE MODEL H W D N P Q R S

240 M3230S 7.50 6.12 5.12 3.77 3.30 1.37 5.50 0.88

240 / 200 M3230 7.50 6.12 5.12 3.77 3.30 1.37 5.50 0.88

3

480 / 400 M3430 7.50 6.12 5.12 3.77 3.30 1.37 5.50 0.88

590 M3530 7.50 6.12 5.12 3.77 3.30 1.37 5.50 0.88

240 / 200 M3250 7.88 7.86 5.94 5.13 3.95 1.50 5.88 1.13

5

480 / 400 M3450 7.50 6.12 5.12 3.77 3.30 1.37 5.50 0.88

590 M3551 7.88 7.86 5.94 5.13 3.95 1.50 5.88 1.13

240 / 200 M3275 9.38 7.86 6.84 3.93 4.19 2.00 5.88 1.13

7.5
480 / 400 M3475 9.38 7.86 6.25 5.13 3.95 1.50 7.38 1.13

590 M3575 9.38 7.86 6.25 5.13 3.95 1.50 7.38 1.13

240 / 200 M32100 11.25 7.86 6.84 3.93 4.19 2.00 7.75 1.38

10

480 / 400 M34100 9.38 7.86 6.84 3.93 4.19 2.00 5.88 1.13

590 M35100 9.38 7.86 7.40 3.93 4.19 2.00 5.88 1.13

240/200 M32150 12.75 7.86 6.84 3.93 4.19 2.00 9.25 1.38

15

480/400 M34150 11.25 7.86 6.84 3.93 4.19 2.00 7.75 1.38

590 M35150 12.75 7.86 6.84 3.93 4.19 2.00 9.25 1.38

240 / 200 M32200 12.75 10.26 7.74 5.13 5.00 2.50 9.25 1.38

20

480/400 M34200 12.75 7.86 6.84 3.93 4.19 2.00 9.25 1.38

590 M35200 12.75 7.86 7.40 3.93 4.19 2.00 9.25 1.38

240 / 200 M32250 15.75 10.26 8.35 5.13 5.00 2.50 12.25 1.38

25

480/400 M34250 12.75 10.26 7.74 5.13 5.00 2.50 9.25 1.38

590 M35250 12.75 10.26 7.74 5.13 5.00 2.50 9.25 1.38

240 / 200 M32300 15.75 10.26 8.35 5.13 5.00 2.50 12.25 1.38

30

480/400 M34300 12.75 10.26 7.74 5.13 5.00 2.50 9.25 1.38

590 M35300 12.75 10.26 8.25 5.13 5.00 2.50 9.25 1.38

480/400 M34400 15.75 10.26 8.35 5.13 5.00 2.50 12.25 1.38

40

590 M35400 15.75 10.26 8.35 5.13 5.00 2.50 12.25 1.38

480/400 M34500 19.75 10.26 8.55 5.13 5.75 2.50 16.25 1.75

50

590 M35500 19.75 10.26 8.55 5.13 5.75 2.50 16.25 1.75

480/400 M34600 19.75 10.26 8.55 5.13 5.75 2.50 16.25 1.75

60

590 M35600 19.75 10.26 8.55 5.13 5.75 2.50 16.25 1.75

5

4.2 TYPE 4, 4X, AND 12 ENCLOSED

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W

R

Q

Q

P

N

HP

(kW)

0.25

(0.18)

(0.37)

INPUT

VOLTAGE MODEL H W D N P Q R S

240 / 120 M3103S 7.88 6.12 3.63 3.06 2.00 1.37 5.88 0.88

240 / 120 M3105S 7.88 7.86 3.75 4.80 2.10 1.37 5.88 0.88

0.5
240 M3205S 7.88 6.12 4.35 3.06 2.70 1.37 5.88 0.88

240/200 M3205 7.88 6.12 4.35 3.06 2.70 1.37 5.88 0.88

Conduit Holes:

S Dia.

0.88" Dia.
S Dia.

Dia. Slot

D

W

U

V

1.00"

T

Mounting Tab Detail

R

H

240 / 200 M3110S 7.88 7.86 4.90 4.80 3.25 1.37 5.88 0.88

1

(0.75)

240 M3210S 7.88 6.12 4.35 3.06 2.70 1.37 5.88 0.88

240 / 200 M3210 7.88 6.12 4.35 3.06 2.70 1.37 5.88 0.88

480 / 400 M3410 7.88 6.12 4.35 3.06 2.70 1.37 5.88 0.88

590 M3510 7.88 6.12 4.35 3.06 2.70 1.37 5.88 0.88

240/120 M3115S 7.88 7.86 4.90 4.80 3.25 1.37 5.88 0.88

1.5

(1.1)

240 M3215S 7.88 7.86 4.90 4.80 3.25 1.37 5.88 0.88

240/200 M3215 7.88 6.12 5.25 3.06 3.60 1.37 5.88 0.88

240 M3220S 7.88 7.86 4.90 4.80 3.25 1.37 5.88 0.88

240 / 200 M3220 7.88 7.86 4.90 4.80 3.25 1.37 5.88 0.88

2

(1.5)

480/400 M3420 7.88 7.86 4.90 4.80 3.25 1.37 5.88 0.88

590 M3520 7.88 7.86 4.90 4.80 3.25 1.37 5.88 0.88

IF W < 7.86"
T = 0.20"
U = 0.34"
V = 0.19"

IF W > 10.26"
T = 0.28"
U = 0.44"
V = 0.24"

6

DIMENSIONS - TYPE 4, 4X, AND 12 ENCLOSED (continued)

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HP

(kW)

(2.2)

(3.7)

(5.5)

(7.5)

(11)

(15)

(18.5)

(22)

(30)

(37.5)

(45)

*Models available in NEMA 12 only.

INPUT

VOLTAGE MODEL H W D N P Q R S

240 M3230S 7.88 7.86 5.90 4.80 4.25 1.37 5.88 0.88

240 / 200 M3230 7.88 7.86 5.90 4.80 4.25 1.37 5.88 0.88

3

480 / 400 M3430 7.88 7.86 4.90 4.80 3.25 1.37 5.88 0.88

590 M3530 7.88 7.86 4.90 4.80 3.25 1.37 5.88 0.88

240 / 200 M3250 9.75 10.26 7.20 5.13 5.25 2.00 7.75 1.13

5

480 / 400 M3450 7.88 7.86 5.90 4.80 4.25 1.37 5.88 0.88

590 M3550 7.88 7.86 5.90 4.80 4.25 1.37 5.88 0.88

240 / 200 M3275 11.75 10.26 8.35 5.13 5.75 2.00 9.75 1.13

7.5
480 / 400 M3475 9.75 10.26 7.20 5.13 5.25 2.00 7.75 1.13

590 M3575 9.75 10.26 7.20 5.13 5.25 2.00 7.75 1.13

240 / 200 M32100 13.75 10.26 8.35 5.13 5.75 2.00 11.75 1.38

10

480 / 400 M34100 11.75 10.26 8.35 5.13 5.75 2.00 9.75 1.13

590 M35100 11.75 10.26 8.35 5.13 5.75 2.00 9.75 1.13

240/200 M32150 15.75 10.26 8.35 5.13 5.75 2.00 13.75 1.38

15

480/400 M34150 13.25 10.26 8.35 5.13 5.75 2.00 11.75 1.38

590 M35150 13.75 10.26 8.35 5.13 5.75 2.00 11.75 1.38

240 / 200 M32200* 15.75 10.26 8.35 5.13 5.75 2.00 11.75 1.38

20

480/400 M34200 15.75 10.26 8.35 5.13 5.75 2.00 13.75 1.38

590 M35200 15.75 10.26 8.35 5.13 5.75 2.00 13.75 1.38

240 / 200 M32250* 20.25 10.26 8.35 5.13 5.75 2.00 16.25 1.38

25

480/400 M34250* 15.75 10.26 8.35 5.13 5.75 2.00 11.75 1.38

590 M35250* 15.75 10.26 8.35 5.13 5.75 2.00 11.75 1.38

240 / 200 M32300* 20.25 10.26 8.35 5.13 5.75 2.00 16.25 1.38

30

480/400 M34300* 15.75 10.26 8.35 5.13 5.75 2.00 11.75 1.38

590 M35300* 15.75 10.26 8.35 5.13 5.75 2.00 11.75 1.38

480/400 M34400* 20.25 10.26 8.35 5.13 5.75 2.00 16.25 1.38

40

590 M35400* 20.25 10.26 8.35 5.13 5.75 2.00 16.25 1.38

480/400 M34500* 21.00 13.72 8.35 5.13 6.10 2.00 16.25 1.38

50

590 M35500* 21.00 13.72 8.35 5.13 6.10 2.00 16.25 1.38

480/400 M34600* 21.00 13.72 8.35 5.13 6.10 2.00 16.25 1.38

60

590 M35600* 21.00 13.72 8.35 5.13 6.10 2.00 16.25 1.38

7

5.0 MC3000 RATINGS

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The following tables indicate the input and output ratings of the MC3000 Series
drive.

NOTE: The output current ratings are based on operation at carrier frequencies
of 8 kHz and below. At full ambient temperature, operation at carrier frequencies
above 8 kHz require derating the drive by multiplying the output current rating by
the following factors: 0.94 at 10 kHz, 0.89 at 12 kHz, and 0.83 at 14 kHz. Refer to
Parameter 23 - CARRIER in Section 18.0 - DESCRIPTION OF PARAMETERS.

M3100 SERIES RATINGS

MODEL

(200/240 Vac, 50 - 60 Hz) (0 - 200/230 Vac)

INPUT OUTPUT

FOR MOTORS NOMINAL NOMINAL

MODEL

NUMBER

RATED INPUT CURRENT2POWER CURRENT POWER

1

HP kW PHASE (AMPS) (KVA) (AMPS) (KVA)

M3103S 0.25 0.18 1 6.0 / 3.0 0.7 1.4 0.56

M3105S 0.5 0.37 1 9.2 / 4.6 1.1 2.2 0.88

M3110S 1 0.75 1 16.2 / 8.1 1.9 4.0 1.6

M3115S 1.5 1.1 1 21 / 10.4 2.5 5.2 2.1

1

See Section 3.0 for model number breakdown.

2

See Section 8.0 for recommended fuse type.

8

M3200 SERIES RATINGS

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MODEL

(200/240 Vac, 50 - 60 Hz) (0 - 200/230 Vac)

INPUT OUTPUT

FOR MOTORS NOMINAL NOMINAL

MODEL

NUMBER

RATED INPUT CURRENT2POWER CURRENT POWER

1

HP kW PHASE (AMPS) (KVA) (AMPS) (KVA)

M3205S 0.5 0.37 1 5.8 / 5.0 1.2 2.5 / 2.2 0.9

M3205 0.5 0.37 3 3.1 / 2.7 1.1 2.5 / 2.2 0.9

M3210S 1 0.75 1 10.3 / 9.0 2.2 4.6 / 4.0 1.6

M3210 1 0.75 3 5.5 / 4.8 2.0 4.6 / 4.0 1.6

M3215S 1.5 1.1 1 13.3 / 11.6 2.8 6.0 / 5.2 2.1

M3215 1.5 1.1 3 7.1 / 6.2 2.6 6.0 / 5.2 2.1

M3220S 2 1.5 1 17.1 / 14.9 3.6 7.8 / 6.8 2.7

M3220 2 1.5 3 9.3 / 8.1 3.4 7.8 / 6.8 2.7

M3230S 3 2.2 1 24 / 21 5.0 11.0 / 9.6 3.8

M3230 3 2.2 3 13.0 / 11.3 4.7 11.0 / 9.6 3.8

M3250 5 3.7 3 20 / 17.7 7.4 17.5 / 15.2 6.1

M3275 7.5 5.5 3 30 / 26 10.6 25 / 22 8.8

M32100 10 7.5 3 37 / 32 13.2 32 / 28 11.2

M32150 15 11 3 55 / 48 19.8 48 / 42 16.7

M32200 20 15 3 70 / 61 25.3 62 / 54 21.5

M32250 25 18.5 3 89 / 77 32.0 78 / 68 27.1

M32300 30 22 3 104 / 90 37.6 92 / 80 31.9

1

See Section 3.0 for model number breakdown.

2

See Section 8.0 for recommended fuse type.

9

M3400 SERIES RATINGS

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MODEL

(400/480 Vac, 50 - 60 Hz) (0 - 400/460 Vac)

INPUT OUTPUT

FOR MOTORS NOMINAL NOMINAL

MODEL

NUMBER

RATED INPUT CURRENT2POWER CURRENT POWER

1

HP kW PHASE (AMPS) (KVA) (AMPS) (KVA)

M3410 1 0.75 3 2.8 / 2.4 2.0 2.3 / 2.0 1.6

M3420 2 1.5 3 4.7 / 4.1 3.4 3.9 / 3.4 2.7

M3430 3 2.2 3 6.6 / 5.7 4.7 5.5 / 4.8 3.8

M3450 5 3.7 3 10.2 / 8.9 7.3 8.7 / 7.6 6.1

M3475 7.5 5.5 3 14.7 / 12.8 10.6 12.6 / 11.0 8.8

M34100 10 7.5 3 18.3 / 15.9 13.2 16.0 / 14.0 11.2

M34150 15 11 3 28 / 24 19.8 24 / 21 16.7

M34200 20 15 3 36 / 31 25.3 31 / 27 21.5

M34250 25 18.5 3 44 / 38 31.9 39 / 34 27.1

M34300 30 22 3 52 / 45 37.6 46 / 40 31.9

M34400 40 30 3 68 / 59 49.0 60 / 52 41.4

M34500 50 37.5 3 85 / 74 61.5 75 / 65 51.8

M34600 60 45 3 100 / 87 72.3 88 / 77 61.3

1

See Section 3.0 for model number breakdown.

2

See Section 8.0 for recommended fuse type.

10

M3500 SERIES RATINGS

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MODEL

(480/590 Vac, 50 - 60 Hz) (0 - 460/575 Vac)

INPUT OUTPUT

FOR MOTORS NOMINAL NOMINAL

MODEL

NUMBER

RATED INPUT CURRENT2POWER CURRENT POWER

1

HP kW PHASE (AMPS) (KVA) (AMPS) (KVA)

M3510 1 0.75 3 1.9 / 1.9 1.9 1.6 / 1.6 1.6

M3520 2 1.5 3 3.3 / 3.3 3.4 2.7 / 2.7 2.7

M3530 3 2.2 3 4.6 / 4.6 4.7 3.9 / 3.9 3.9

M3550/51 5 3.7 3 7.1 / 7.1 7.3 6.1 / 6.1 6.1

M3575 7.5 5.5 3 10.5 / 10.5 10.7 9.0 / 9.0 8.8

M35100 10 7.5 3 12.5 / 12.5 12.8 11.0 / 11.0 11.0

M35150 15 11 3 19.3 / 19.3 19.7 17.0 / 17.0 16.9

M35200 20 15 3 25 / 25 25.4 22 / 22 21.5

M35250 25 18.5 3 31 / 31 31.2 27 / 27 26.9

M35300 30 22 3 36 / 36 37.1 32 / 32 31.9

M35400 40 30 3 47 / 47 47.5 41 / 41 40.8

M35500 50 37.5 3 59 / 59 60.3 52 / 52 51.8

M35600 60 45 3 71 / 71 72.5 62 / 62 61.7

1

See Section 3.0 for model number breakdown.

2

See Section 8.0 for recommended fuse type.

11

6.0 THEORY

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6.1 DESCRIPTION OF AC MOTOR OPERATION

Three phase AC motors are comprised of two major components, the stator and
the rotor. The stator is a set of three electrical windings held stationary in the motor
housing. The rotor is a metal cylinder, fixed to the motor drive shaft, which rotates
within the stator. The arrangement of the stator coils and the presence of three
phase AC voltage give rise to a rotating magnetic field which drives the rotor. The
speed at which the magnetic field rotates is known as the synchronous speed of
the motor. Synchronous speed is a function of the frequency at which the voltage

is alternating and the number of poles in the stator windings.

The following equation gives the relation between synchronous speed, frequency,
and the number of poles:

Ss = 120 f/p

Where: Ss = Synchronous speed (rpm ), f = frequency (Hz),
p = number of poles

In three phase induction motors the actual shaft speed differs from the synchronous
speed as load is applied. This difference is known as “slip”. Slip is commonly
expressed as a percentage of synchronous speed. A typical value is three percent
at full load.

The strength of the magnetic field in the gap between the rotor and stator is
proportional to the amplitude of the voltage at a given frequency. The output torque
capability of the motor is, therefore, a function of the applied voltage amplitude at
a given frequency. When operated below base (rated) speed, AC motors run in
the range of “constant torque”. Constant torque output is obtained by maintaining
a constant ratio between voltage amplitude (Volts) and frequency (Hertz). For
60 Hz motors rated at 230, 460, and 575 Vac, common values for this V/Hz ratio
are 3.83, 7.66, and 9.58 respectively. Operating with these V/Hz ratios generally
yields optimum torque capability. Operating at lower ratio values results in lower
torque and power capability. Operating at higher ratio values will cause the motor
to overheat. Most standard motors are capable of providing full torque output from
3 to 60 Hz. However, at lower speeds, where motor cooling fans become less
effective, supplemental cooling may be needed to operate at full torque output
continuously.

If the frequency applied to the motor is increased while the voltage remains constant,
torque capability will decrease as speed increases. This will cause the horsepower
capability of the motor to remain approximately constant. Motors run in this mode
when operated above base speed, where drive output voltage is limited by the input
line voltage. This operating range is known as the “constant horsepower” range.
The typical maximum range for constant horsepower is about 2.3 to 1 (60 to 140
Hz). The diagram below depicts the characteristics of a typical AC induction motor
with a 60 Hz base speed.

Consult motor manufacturer before
above base speed.

WARNING!

operating motor and/or driven equipment

12

150

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130

CONSTANT TORQUE

CONSTANT

HP

110

90

70

TORQUE (%)

50

30

10

.

1 VARIABLE TORQUE VS. CONSTANT TORQUE

6.1

Variable frequency drives, and the loads they are applied to, can generally be
divided into two groups: constant torque and variable torque. Constant torque loads
include: vibrating conveyors, punch presses, rock crushers, machine tools, and
just about every other application that is not considered variable torque. Variable
torque loads include centrifugal pumps and fans, which make up the majority of
HVAC applications.

Variable torque loads are governed by the affinity laws, which define the relationships
between speed, flow, torque and horsepower. The diagram below illustrates these
relationships:

100%

75%

TORQUE HORSEPOWER

HORSEPOWER

20 40

FREQUENCY (Hz)

60 80 100 120

TORQUE

50%

25%

0%

0%

25%

% FLOW

% TORQUE

50%

% SPEED

% HORSEPOWER

75%

100%

13

“Variable torque” refers to the fact that the torque required varies with the square of

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the speed. Also, the horsepower required varies with the cube of the speed, resulting
in a large reduction in horsepower for even a small reduction in speed. It is easily
seen that substantial energy savings can be achieved by reducing the speed of a
fan or pump. For example, reducing the speed to 50% results in a 50 HP motor
having to produce only 12.5% of rated horsepower, or 6.25 HP. Variable torque
drives usually have a low overload capacity (110% - 120% for 60 seconds), because
variable torque applications rarely experience overload conditions. To optimize
efficiency and energy savings, variable torque drives are usually programmed to
follow a variable V/Hz ratio.

The term “constant torque” is not entirely accurate in terms of the actual torque
required for an application. Many constant torque applications have reciprocating
loads, such as vibrating conveyors and punch presses, where the rotational motion of
the motor is being converted to a linear motion. In such cases, the torque required can
vary greatly at different points in the cycle. For constant torque loads, this fluctuation
in torque is not a direct function of speed, as it is with a variable torque load. As
a result, constant torque drives typically have a high overload rating (150% for 60
seconds) in order to handle the higher peak torque demands. To achieve maximum
torque, constant torque drives follow a constant V/Hz ratio.

Both MC Series product lines (MC1000 and MC3000) have full overload capacity
(150% for 60 seconds, 180% for 30 seconds), so that either one can be used for either
type of application. The V/Hz ratio can also be changed to optimize performance
for either type of application.

6.2 DRIVE FUNCTION DESCRIPTION

The MC Series is a 16 bit microprocessor based, keypad programmable, variable
speed AC motor drive. There are four major sections: an input diode bridge and filter,
a power board, a control board, and an output intelligent power module.

6.2.1 DRIVE OPERATION

Incoming AC line voltage is converted to a pulsating DC voltage by the input diode
bridge. The DC voltage is supplied to the bus filter capacitors through a charge
circuit which limits inrush current to the capacitors during power-up. The pulsating DC
voltage is filtered by the bus capacitors which reduces the ripple level. The filtered
DC voltage enters the inverter section of the drive, composed of six output intelligent
insulated gate bi-polar transistors (IGBTs) which make up the three output legs of
the drive. Each leg has one intelligent IGBT connected to the positive bus voltage
and one connected to the negative bus voltage. Alternately switching on each leg,
the intelligent IGBT produces an alternating voltage on each of the corresponding
motor windings. By switching each output intelligent IGBT at a very high frequency
(known as the carrier frequency) for varying time intervals, the inverter is able to
produce a smooth, three phase, sinusoidal output current wave which optimizes
motor performance.

14

6.2.2 CIRCUIT DESCRIPTION

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The control section consists of a control board with a 16 bit microprocessor,
keypad and display. Drive programming is accomplished via the keypad or the
serial communications port. During operation the drive can be controlled via the
keypad, by control devices wired to the control terminal strip, or by the the serial
communications port. The Power Board contains the control and protection circuits
which govern the six output IGBTs. The Power Board also contains a charging circuit
for the bus filter capacitors, a motor current feedback circuit, a voltage feedback
circuit, and a fault signal circuit. The drive has several built in protection circuits.
These include phase-to-phase and phase-to-ground short circuit protection, high
and low line voltage protection, protection against excessive ambient temperature,
and protection against continuous excessive output current. Activation of any of
these circuits will cause the drive to shut down in a fault condition.

6.2.3 MC3000 INPUTS AND OUTPUTS

The drive has two analog inputs (0-10 VDC and 4-20 mA) that can be used for speed
reference, PID setpoint reference, or PID feedback. A speed potentiometer (10,000
Ohm) can be used with the 0-10 VDC input.

There are also two analog outputs: one is proportional to speed (frequency), and
the other is proportional to load.

The drive has three programmable outputs for status indication: one Form C relay
and two open-collector outputs.

Refer to Sections 14.0 - CONTROL WIRING and 15.0 - CONTROL WIRING
DIAGRAMS for more information.

15

7.0 INSTALLATION

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DRIVES MUST NOT BE INSTALLED WHERE SUBJECTED TO ADVERSE
ENVIRONMENTAL CONDITIONS! DRIVES MUST NOT BE INSTALLED
WHERE SUBJECTED TO: COMBUSTIBLE, OILY, OR HAZARDOUS VAPORS
OR DUST; EXCE SSIVE MOISTURE OR DIRT; STRONG VIBR ATION;
EXCESSIVE AMBIENT TEMPERATURES. CONSULT AC TECHNOLOGY FOR
MORE INFORMATION ON THE SUITABILITY OF A DRIVE TO A PARTICULAR
ENVIRONMENT.

The drive should be mounted on a smooth vertical surface capable of safely
supporting the unit without vibrating. The LCD display has an optimum field of view,
this should be considered when determining the mounting position.

Chassis models must be installed in an electrical enclosure which will provide
complete mechanical protection and maintain uniform internal temperature within the
drive’s ambient operating temperature rating. All drive models MUST be mounted
in a vertical position for proper heatsink cooling.

Maintain a minimum spacing around the drive as follows:

WARNING!

SPACING REQUIREMENTS

HP

0.25 - 5 2 50

7.5 - 25 4 100

30 - 60 6 150

drive models MUST be mounted in a vertical position for proper heatsink cooling.

All
Fans or blowers should be used to insure proper cooling in tight quarters. Do not
mount drives above other drives or heat producing equipment that would impede
the cooling of the drive. Note the ambient operating temperature ratings for each
drive model.

If it is necessary to drill or cut the drive enclosure or panel, extreme care must be
taken to avoid damaging drive components or contaminating the drive with metal
fragments (which cause shorting of electrical circuits). Cover drive components
with a clean cloth to keep out metal chips and other debris. Use a vacuum cleaner
to clean drive components after drilling, even if chips do not appear to be present.
Do not attempt to use positive air pressure to blow chips out of drive, as this tends
to lodge debris under electronic components. Contaminating the drive with metal
chips can cause drive failure and will void the warranty.

The MC3000 Series is UL approved for solid state motor overload protection.
Therefore, a separate thermal overload relay is not required for single motor
applications. In applications where one drive is operating more than one motor, a
separate thermal overload relay is required for each motor per NEC.

INCHES mm

16

7.1 INSTALLATION AFTER A LONG PERIOD OF STORAGE

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Severe damage to the drive can result if it is operated after a long period of
storage or inactivity without reforming the DC bus capacitors!

If input power has not been applied to the drive for a period of time exceeding
three years (due to storage, etc), the electrolytic DC bus capacitors within the drive
can change internally, resulting in excessive leakage current. This can result in
premature failure of the capacitors if the drive is operated after such a long period
of inactivity or storage.

In order to reform the capacitors and prepare the drive for operation after a long
period of inactivity, apply input power to the drive for 8 hours prior to actually operating
the drive/motor system.

WARNING!

7.2 EXPLOSION PROOF APPLICATIONS

Explosion proof motors that are not rated for inverter use lose their certification when
used for variable speed. Due to the many areas of liability that may be encountered
when dealing with these applications, the following statement of policy applies:

"AC Technology Corporation inverter products are sold with no warranty of
fitness for a particular purpose or warranty of suitability for use with explosion
proof motors. AC Technology Corporation accepts no responsibility for any
direct, incidental or consequential loss, cost, or damage that may arise through
the use of its AC inverter products in these applications. The purchaser
expressly agrees to assume all risk of any loss, cost, or damage that may
arise from such application."

17

8.0 INPUT AC REQUIREMENTS

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Hazard of electrical shock! Disconnect incoming power and wait three minutes
before servicing the drive. Capacitors retain charge after power is removed.

WARNING!

8.1 INPUT AC POWER REQUIREMENTS

8.1.1 VOLTAGE

The input voltage must match the drive’s nameplate voltage rating. Voltage
fluctuation must not vary by greater than 10% overvoltage or 15% undervoltage.

NOTE: Drives with dual rated input voltage must be programmed for the proper
supply voltage - see Parameter 0 - LINE VOLTS in Section 18.0 - DESCRIPTION
OF PARAMETERS.

The UL file for this drive shows that it is suitable for use on a circuit capable of
delivering not more than 200,000 RMS symmetrical amperes, at the drive’s rated
voltage. The CSA file identifies a short-circuit withstand rating of 5,000 RMS
symmetrical amperes at the drives rated voltage.

Three phase voltage imbalance must be less than 2.0% phase to phase. Excessive
phase to phase imbalance can cause severe damage to the drive’s power
components.

Motor voltage should match line voltage in normal applications. The drive’s maximum
output voltage will equal the input voltage. Use extreme caution when using a motor
with a voltage rating which is different from the input line voltage.

8.1.2 SUPPLY TRANSFORMER KVA RATINGS

If the kVA rating of the AC supply transformer is greater than ten times the input
kVA rating of the drive, a drive isolation transformer, or a 2 - 3% input line reactor

(also known as a choke) must be added.

8.2 INPUT FUSING AND DISCONNECT REQUIREMENTS

A circuit breaker or a disconnect switch with fuses must be provided in accordance
with the National Electric Code (NEC) and all local codes.

The MC3000 drive is capable of withstanding up to 150% current overload for 60
seconds. Select a fuse or magnetic trip circuit breaker rated at 1.5 times the input
current rating of the drive (the minimum size should be 10 amps, regardless of input
current rating). Refer to Section 5.0 – MC3000 RATINGS.

Minimum voltage rating of the protection device should be 250 Vac for 240/120
Vac and 240/200 Vac rated drives, and 600 Vac for 480/400 Vac and 590/480 Vac
drives.

Current limiting type fuses should be used when input fusing is required. Select fuses
with low I
KTK-R, JJN or JJS. Similar fuses with equivalent ratings by other manufacturers
may also be acceptable.

2

T values, rated at 200,000 AIC. Recommended fuses are Bussman type

18

9.0 VOLTAGE SELECTION

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9.1 INPUT VOLTAGE RATINGS

M3100 Series drives are rated for 240/120 Vac, 50-60 Hz input. The drive will
function with input voltage of 120 Vac (+ 10%, -15%) at 48 to 62 Hz when wired
for 120 Vac input, or with input voltage of 240 Vac (+ 10%, - 15%), at 48 to 62 Hz,

when wired for 240 Vac input.

M3200 Series drives are rated for 240/200 Vac, 50-60 Hz input. The drive will function
with input voltages of 200 to 240 Vac (+ 10%, - 15%), at 48 to 62 Hz.

M3400 Series drives are rated for 480/400 Vac, 50-60 Hz input. The drive will
function with input voltages of 400 to 480 Vac (+ 10%, - 15%), at 48 to 62 Hz.

M3500 Series drives are rated for 590/480 Vac, 50-60 Hz input. The drive will function
with input voltages of 480 to 590 Vac (+ 10%, - 15%), at 48 to 62 Hz.

19

10.0 POWER WIRING

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Hazard of electrical shock. Disconnect incoming power and wait three minutes
before servicing the drive. Capacitors retain charge after power is removed.

Note drive input and output current ratings and check applicable electrical codes
for required wire type and size, grounding requirements, overcurrent protection,
and incoming power disconnect, before wiring the drive. Size conservatively to
minimize voltage drop.

Input fusing and a power disconnect switch or contactor MUST be wired in series
with terminals L1, L2, and L3 (L1 and L2 if input is single phase). If one has not been
supplied by AC Technology Corporation, a disconnect means must be wired during
installation. This disconnect must be used to power down the drive when servicing,
or when the drive is not to be operated for a long period of time, but should not be
used to start and stop the motor.

Repetitive cycling of a disconnect or input contactor (more than once every
two minutes) may cause damage to the drive.

WARNING!

10.1 WIRING FOR SINGLE PHASE OR THREE PHASE INPUT

If the drive is nameplated for 240/120 Vac single phase input, wire the input to
terminals L1 and N and jumper terminals L1 to L2 for 120 Vac input voltage, or wire
to terminals L1 and L2 (do not wire to N) for 240 Vac input voltage. Refer to Section

11.0 - MC3000 POWER WIRING DIAGRAM.

If the drive is nameplated for three phase input only, wire the input to terminals L1,
L2, and L3.

All three power output wires, from terminals T1, T2, and T3 to the motor, must be
kept tightly bundled and run in a separate conduit away from all other power and
control wiring.

It is not recommended to install contactors or disconnect switches between the
drive and motor. Operating such devices while the drive is running can potentially
cause damage to the drive's power components. If such a device is required, it
should only be operated when the drive is in a STOP state. If there is potential for
the device to be opened while the drive is running, the drive must be programmed
for COAST TO STOP (see Parameter 26 - STOP), and an auxiliary contact on the
device must be interlocked with the drive's run circuit. This will give the drive a stop
command at the same time the device opens, and will not allow the drive to start
again until the device is closed.

20

11.0 MC3000 POWER WIRING DIAGRAM

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T3

T1 T2

L1 L2 L3

L1L2N

120 Vac SINGLE

PHASE INPUT

DIAGRAM

WIRING

L1 L2 N

240 Vac SINGLE

PHASE INPUT

WIRING DIAGRAM

THREE PHASE

AC MOTOR

GND

GNDGND

FUSED INPUT

VOLTAGE

DISCONNECT

MEANS

(REQUIRED)

WARNING!

Do not connect incoming AC power to output terminals T1, T2, or T3. Severe
damage to the drive will result.

INSTALL, WIRE, AND GROUND IN ACCORDANCE WITH ALL APPLICABLE
CODES.

NOTES:

1. Wi

e the motor for the proper voltage per the output rating of the drive. Motor

r
wires MUST be run in a separate steel conduit away from control wiring and
incoming AC power wiring.

2. Do not install contactors between the drive and the motor without consulting
AC Technology for more information. Failure to do so may result in drive
damage.

3. Remove any existing, and do not install, power factor correction capacitors
between the drive and the motor. Failure to do so will result in drive
damage.

4. Use only UL and CSA listed and approved wire.

5. Minimum wire voltage ratings: 300 V for 120, 200 and 240 Vac systems,
and 600 V for 400, 480, and 590 Vac systems.

6. Wire guage must be based on a minimum of 125% of the rated input/output
current of the drive, and a minimum 75°C insulation rating. Use copper wire
only.

7. Wire and ground in accordance with NEC or CEC, and all applicable local
codes.

21

12.0 INITIAL POWER UP

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Hazard of electrical shock! Wait three minutes after disconnecting incoming power
before servicing drive. Capacitors retain charge after power is removed.

Before attempting to operate the drive, motor, and driven equipment be sure all
procedures pertaining to installation and wiring have been properly followed.

Severe damage to the drive can result if it is operated after a long period of
storage or inactivity without reforming the DC bus capacitors!

If input power has not been applied to the drive for a period of time exceeding
three years (due to storage, etc), the electrolytic DC bus capacitors within the drive
can change internally, resulting in excessive leakage current. This can result in
premature failure of the capacitors if the drive is operated after such a long period
of inactivity or storage.

In order to reform the capacitors and prepare the drive for operation after a long
period of inactivity, apply input power to the drive for 8 hours prior to actually operating
the drive/motor system.

Disconnect the driven load from the motor. Verify that the drive input terminals
(L1, L2, and L3) are wired to the proper input voltage per the nameplate rating of

the drive.

NOT

DO
not cycle input power to the drive more than once every two minutes. Damage
to the drive will result.

Energize the incoming power line. The LCD display should light and flash “TESTING”
and then show the voltage and horsepower rating of the drive. The display should
then show “STOP 20.00 HZ” which indicates that the drive is in a STOP condition,
and the speed setpoint is 20.00 Hz:

connect

incoming

WARNING!

WARNING!

WARNING!

AC power to output terminals T1, T2, and T3! Do

STOP > 20.00 HZ

If the display does not appear, remove the incoming power, wait three minutes for
the bus capacitors to discharge, and verify correct installation and wiring. If the
wiring is correct, re-apply incoming power and note the display for drive status. If
the display still does not appear call the factory for assistance.

22

If the drive powers up correctly, follow the procedure given below to check the

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motor rotation:

1. Verify that there is a wire jumper between terminals TB-1 and TB-2 on the
Main Control Board. The drive should have this jumper from the factory. If
it is not present, add one, otherwise the drive will not start.

2. Us

the  key to decrease the speed setpoint to the minimum value allowed

e

(0.50 Hz if Parameter 10 - MIN FRQ has not been changed).

3. Press the START key. The drive should indicate RUN, but if the speed
setpoint is 0.50 Hz, the motor may not rotate. Press the  key to increase
the speed setpoint until the motor starts to rotate.

4. If the motor is rotating in the wrong direction, press the STOP key and
remove power from the drive. Wait three minutes for the bus capacitors to
discharge, and swap any two of the motor wires connected to T1, T2, and
T3.

NOTE 1: The drive is phase insensitive with respect to incoming line voltage.
Therefore, to change the motor rotation, the phases must be swapped at the drive
output terminals or at the motor.

NOTE 2: If the drive's display is blank when power is applied, and the drive is
equipped with fans at the bottom of the heatsink, make sure the fans are spinning
and are free of any obstruction. If any of the fans are clogged with debris, it will
cause a blank display when power is applied.

23

13.0 KEYPAD CONTROL

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The drive can be operated in a number of different ways: keypad (LOCAL), control
devices wired to the terminal strip (REMOTE), serial communications (SERIAL), or
combinations of each. The drive should first be operated from the keypad during initial
start-up. Refer to Sections 14.0 - CONTROL WIRING, and 18.0 - DESCRIPTION
OF PARAMETERS for information on remote operation.

13.1 KEYPAD FUNCTIONS

START/STOP To start the drive, press the START key. To stop the drive,

NOTE 1: A jumper may need to be installed between TB-1

NOTE 2: The STOP key is active in both LOCAL and

SPEED SETPOINT To increase the speed setpoint, press the  key. To

NOTE: The  and  keys are only active if another speed

LOCAL/REMOTE To toggle between LOCAL and REMOTE mode, press the

NOTE: Parameter 30 - CONTROL must be set to KEYPAD

AUTO/MANUAL To toggle between AUTOMATIC (terminal strip) and

NOTE: Parameter 28 - AUTO/MAN must be set to A/M

FAULT RESET Use the STOP key to reset a fault. If the fault condition

NOTE: If an OUTPUT fault occurs, there will be a 30

press the STOP key.

and TB-2 in order to START the drive in LOCAL mode (refer
to Parameter 30 - CONTROL).

REMOTE modes.

decrease the speed setpoint, press the  key.

reference source is not selected.

LOCAL/REMOTE key to select the desired mode, and then
press the ENTER key within three seconds to confirm the
change.

or KEYPAD 2 for this key to be active.

MANUAL (keypad) speed control, press the AUTO/MAN
key to select the desired mode, and then press the ENTER
key within three seconds to confirm the change.

LOC or A/M SPD for this key to be active. See Section 14.0

- CONTROL WIRING for information on automatic speed
reference sources.

has passed, pressing the STOP key will clear the fault and
return the drive to a STOP condition.

second delay before the fault can be cleared using the
STOP key.

24

13.2 MC3000 DISPLAY

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The following describes the possible display configurations for the MC3000 Series
drive when operating as a standard drive (without PID control). Refer to Section 19.0

- MC3000 PID SETPOINT CONTROL for a complete description of drive operation
when using PID control.

13.2.1 MC3000 DISPLAY IN STOP MODE

When the drive is in the STOP mode, there are three possible displays. The first is
the SPEED display, which looks like this:

DRIVE

STATUS

SPEED

SETPOINT

STOP > 60.00 HZ

DIRECTION

(FORWARD)

SPEED

UNITS

NOTE: See Parameter 31 - UNITS for the SPEED UNITS display options.

Pressing the ENTER key will change the display from the SPEED indication to the
% LOAD indication:

DRIVE

STATUS

PERCENT

LOAD

STOP > 0% LOAD

DIRECTION

(FORWARD)

Pressing the ENTER key again will change the display from the % LOAD indication
to the VAC (motor voltage) indication:

DRIVE

STATUS

MOTOR

VOLTAGE

STOP > 0 VAC

DIRECTION
(FORWARD)

Pressing ENTER again will change the display back to the SPEED indication.

25

The following table shows the possible DRIVE STATUS indications that can appear

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on the drive display:

DRIVE STATUS TABLE

DISPLAY DESCRIPTION

STOP Drive to STOP mode - No output to motor.

RUN Drive is in RUN mode and is within + 0.3 Hz of the speed setpoint.

FAULT

LOCK Drive is in FAULT LOCKOUT after five unsuccessful restart attempts.

BRAKE DC BRAKE is energized.

LIMIT

F DEC Drive is in DECEL FREEZE because DECEL is set too fast.

13.2.2 MC3000 DISPLAY IN RUN MODE

When the drive is in the RUN mode, the default display will look like this:

Drive has shut down due to a FAULT condition. If the fault condition
has
passed, pressing the STOP key will clear the fault and return the

Drive is in CURRENT LIMIT due to an overloaded motor, or ACCEL
is set

DRIVE

STATUS

SPEED

SETPOINT

RUN > 60.00 HZ

PERCENT

LOAD

SPEED

UNITS

DIRECTION

(FORWARD)

As in the STOP mode, the ENTER key can be used to toggle the display from SPEED
to % LOAD to VAC (motor voltage):

DRIVE

STATUS

RUN > 85% LOAD

DIRECTION

(FORWARD)

26

DRIVE

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STATUS

MOTOR

VOLTAGE

RUN > 460 VAC

DIRECTION

(FORWARD)

NOTE: During acceleration and deceleration to the SPEED SETPOINT, the DRIVE
STATUS will show the actual drive speed. When the SPEED SETPOINT is reached,
the DRIVE STATUS will change to RUN (or STOP if the drive is decelerating to a
STOP).

13.2.3 MC3000 DISPLAY IN FAULT MODE

When the drive trips on a fault, the display will automatically change to the FAULT
display, which indicates the FAULT MESSAGE:

DRIVE

STATUS

FAULT

MESSAGE

FAULT: OVERLOAD

In FAULT mode, the ENTER key will toggle the display between four screens:
FAULT, SPEED, % LOAD and VAC. The DRIVE STATUS for these displays will
be FAULT. An example is shown below of the drive in the FAULT mode displaying
SPEED.

DRIVE

STATUS

SPEED

SETPOINT

FAULT > 60.00 HZ

DIRECTION

(FORWARD)

NOTE: To clear a FAULT, press the STOP key, issue a remote STOP command
at TB-1, or use TB-13D (refer to Parameter 50 - TB13D).

SPEED

UNITS

27

13.2.4 MC3000 DISPLAY IN AUXILIARY MODE

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If the ENTER key is held down, the display will enter the auxiliary mode and cycle
between two displays: a CONTROL display that indicates the control source (LOCAL,
REMOTE, or SERIAL), AUTO or MANUAL mode, and the speed reference source,
and a TIME display that indicates total elapsed run time. When the ENTER key is
released, the display will return to the previous screen. Examples of the auxiliary
mode displays are shown below:

SPEED

CONTROL

SOURCE

AUTO/MAN

MODE

REFERENCE

SOURCE

LOCAL -- AUTO -- IDC

CONTROL DISPLAY

TIME: 487.2 HRS

TIME DISPLAY

The table below shows the possible SPEED REFERENCE SOURCE indications
for the CONTROL display in the auxiliary mode:

SPEED REFERENCE SOURCE TABLE

DISPLAY DESCRIPTION

KEY

VDC

IDC

SP#1 - SP#4 PRESET SPEED #1 - PRESET SPEED #4

MKB

AKB

KEYPAD -  and  keys.

0 - 10 VDC analog input at TB-5A (In PID mode, this indicates that
the

4 - 20 mA analog input at TB-5B (In PID mode, this indicates that
the

MANUAL KEYBOARD - The  and  keys are used for speed
control. This occurs in PID mode when the drive is put into HAND
(open-loop) mode.

AUTO KEYBOARD - The  and  keys are used as the PID
SETPOINT reference. This occurs in PID mode when the drive is put
into AUTO (closed-loop) mode.

28

14.0 CONTROL WIRING

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14.1 GENERAL

14.1.1 KEYPAD CONTROL

The drive can be controlled by the keypad or by control devices wired to the terminal
strip. The drive will run from the keypad “out of the box”, as long as the factory
jumper between TB-1 and TB-2 is present, as shown below. If the jumper is not
present, add one, otherwise the drive will not start from the keypad. Refer to Section

13.0 - KEYPAD CONTROL.

1 2 5A 5B 6 10A 12A RXA TXB10B 2 13A 13B 13C 13D 14 15 2

FACTORY JUMPER

16 17 18

14.1.2 CONTROL WIRING VS. POWER WIRING

External control wiring MUST be run in a separate conduit away from all other
input and output power wiring. If control wiring is not kept separate from power
wiring, electrical noise may be generated on the control wiring that will cause erratic
drive behavior. Use twisted wires or shielded cable grounded at the drive chassis
ONLY. Recommended control wire is Belden 8760 (2-wire) or 8770 (3-wire), or
equivalent.

Torque the control terminals to 2 lb-in (0.2 Nm). Be careful not to overtorque the
control terminals, as this will cause damage to the terminal strip. This is not covered
under warranty and can only be repaired by replacing the control board.

14.1.3 TB-2: CIRCUIT COMMON

The TB-2 terminals are used as circuit common for the start/stop, input select, local/
remote, analog input, and analog output functions. There are three TB-2 terminals
available on the terminal strip, and they are all internally connected to each other on
the main control board. If necessary TB-2 may be connected to chassis ground.

NOTE: TB- 2 MUST be connected to chassis ground when using serial
communications.

14.1.4 SURGE SUPPRESSION ON RELAYS

Current and voltage surges and spikes in the coils of contactors, relays, solenoids,
etc, near or connected to the drive, can cause erratic drive operation. Therefore,
a snubber circuit should be used on coils associated with the drive. For AC coils,
snubbers should consist of a resistor and a capacitor in series across the coil. For
DC coils, a free-wheeling or flyback diode should be placed across the coil. Snubbers
are typically available from the manufacturer of the device.

29

14.2 START/STOP AND SPEED CONTROL

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14.2.1 REMOTE MODE SELECTION

In order to respond to external START/STOP commands, the drive must be in the
REMOTE mode. The REMOTE mode can be selected by one of three methods
on the MC3000 drive:

1. Program Parameter 30 - CONTROL to REMOTE.

2. Program Parameter 30 - CONTROL to KEYPAD or KEYPAD 2, which
activates the LOCAL/REMOTE key on the keypad. Press the LOCAL/
REMOTE key to select REMOTE mode, and then press the ENTER key
within three seconds.

gram Parameter 30 - CONTROL to TB STRIP, and program the function

3. Pro
of terminal TB-13A or TB-13C (Parameter 47 or 49) to LOCAL SELECT.
DO NOT make a contact closure between TB-13A or TB-13C and TB-2
(making the contact closure will select LOCAL mode).

14.2.2 TWO-WIRE START/STOP CONTROL

A two-wire start/stop circuit can be accomplished as follows:

1. Select REMOTE mode (see above).

2. Connect a jumper between TB-12A and TB-2 to provide a permanent START
command to the drive.

3. Wire a normally open maintained contact between TB-1 and TB-2. Close
this contact to RUN the drive and open this contact to STOP the drive.

r to the wiring diagram in Section 15.2.

Refe

14.2.3 THREE-WIRE START/STOP CONTROL

A three-wire start/stop circuit can be accomplished as follows:

1. Select REMOTE mode (see above).

2. Wire a normally closed momentary STOP contact between TB-1 and TB-2.
Momentarily open this contact to STOP the drive.

3. Wire a normally open momentary START contact between TB-12A and
TB-2. Momentarily close this contact to START the drive.

Refe

r to the wiring diagram in Section 15.3.

14.2.4 SPEED REFERENCE SIGNALS

The drive allows for three analog speed reference inputs: a speed potentiometer
(10,000 Ohm), 0-10 VDC, or 4-20 mA.

SPEED POT Connect the wiper to terminal TB-5A, and connect the

0-10 VDC Wire the positive to terminal TB-5A and the negative to

4-20 mA Wire the positive to

high and low end leads to terminals TB-6 and TB-2,
respectively.

terminal TB-2. TB-5A input impedance is 200 kilohms.

terminal TB-5B and the negative to

terminal TB-2. TB-5B input impedance is 100 Ohms.

30

14.2.5 SPEED REFERENCE SELECTION

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AUTO/MAN vs. LOCAL/REMOTE

For the MC3000 Series drive, operating in standard (non-PID) mode, AUTO/MAN
refers to speed control, and LOCAL/REMOTE refers to START/STOP control.
AUTOMATIC and MANUAL speed control selection is affected by whether the
drive is in LOCAL or REMOTE mode, as described below. Refer to Section 19.0

- MC3000 PID SETPOINT CONTROL for a complete description of drive operation
when using the PID control function.

AUTO/MAN SELECTION IN LOCAL MODE

In LOCAL mode (keypad start/stop control), AUTOMATIC and MANUAL selection
is determined by Parameter 28 - AUTO/MAN. When Parameter 28 is set to A/M
LOC or A/M SPD, the AUTO/MAN key on the keypad is active and can be used
to toggle between MANUAL (keypad) and AUTOMATIC (0-10 VDC, 4-20 mA, or
preset speeds) speed control. This is done by pressing the AUTO/MAN key to
select the desired mode, and then pressing the ENTER key within three seconds
to confirm the change.

When AUTOMATIC mode is selected, one of the TB-13 input selects must be
programmed to select the desired speed reference, and that TB-13 terminal must
be closed to TB-2. The drive will then respond to the automatic speed reference.
If the contact closure is not made between the TB-13 terminal and TB-2, the drive
will remain in AUTO mode, but speed control will default to the keypad. Therefore,
if the Form C relay or open-collector outputs are set to indicate AUTO/MAN mode,
they will still indicate AUTO mode.

AUTO/MAN SELECTION IN REMOTE MODE

In REMOTE mode (terminal strip start/stop control), speed control is either selected
using the AUTO/MAN key (Parameter 28 - AUTO/MAN must be set to A/M SPD to
do this), or by using the TB-13 input selects.

If AUTOMATIC mode is selected using the AUTO/MAN key (Parameter 28 - AUTO/
MAN must be set to A/M SPD to do this), and a speed reference is not selected using
one of the TB-13 input selects, the drive will remain in AUTO mode, but speed control
will default to the keypad. Therefore, if the Form C relay or open-collector outputs
are set to indicate AUTO/MAN mode, they will still indicate AUTO mode.

If the drive is configured to select AUTOMATIC mode by using one of the the TB-13
input selects, closing the TB-13 terminal to TB-2 selects AUTOMATIC mode, and
opening the TB-13 terminal selects MANUAL (keypad) mode. Therefore, if the TB-13
terminal is not closed to TB-2, and the Form C relay or open-collector outputs are
set to indicate AUTO/MAN mode, they will indicate MANUAL mode.

0 - 10 VDC and 4 - 20 mA INPUT SIGNALS

TB-13A, TB-13B, and TB-13C can all be programmed to select 0-10 VDC or 4-20
mA input.

31

PRESET SPEEDS

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TB-13A can be programmed to select SPEED #1, TB-13B to select SPEED #2, and
TB-13C to select SPEED #3. Closing any two of these terminals to TB-2 will select
SPEED #4. Refer to Parameters 1-4: SPEED #1 - #4 in Section 18.0 - DESCRIPTION
OF PARAMETERS.

MOP - MOTOR OPERATED POT

TB-13A and TB-13B are used for this function, which sets the speed of the drive
using contacts wired to the terminal strip. Program TB-13A to select DEC FREQ,
and program TB-13B to select INC FREQ. Closing TB-13A to TB-2 will activate the
DEC FREQ function, and will cause the speed setpoint to decrease until the contact
is opened. DEC FREQ will operate when the drive is in RUN mode or STOP mode.
Closing TB-13B to TB-2 will activate the INC FREQ function, and will cause the
speed setpoint to increase until the contact is opened. INC FREQ will only operate

when the drive is in RUN mode.

NOTE: If TB-13A, TB-13B, and TB-13C are all programmed to select speed
references, and two or three of the terminals are closed to TB-2, the higher terminal
has priority and will override the others. For example, if TB-13A is programmed
to select 0-10VDC, and TB-13C is programmed to select PRESET SPEED #3,
closing both terminals to TB-2 will cause the drive to respond to PRESET SPEED
#3, because TB-13C overrides TB-13A.

14.2.6 ANALOG OUTPUT SIGNALS

There are two terminals that can supply analog output signals proportional to
output frequency or load. Terminal TB-10A can provide a 0-10 VDC or a 2-10 VDC
signal proportional to output frequency, and TB-10B can provide the same signals
proportional to load. The 2-10 VDC signals can be converted to a 4-20 mA signal
using a resistor in series with the signal such that the total circuit resistance is 500
Ohms. See Parameters: 42 - TB10A OUT, 43 - @TB10A, 44 - TB10B OUT, and
45 - @TB10B in Section 18.0 - DESCRIPTION OF PARAMETERS.

14.2.7 DRIVE STATUS OUTPUTS

The control board has one Form C relay at terminals TB-16, TB-17, and TB-18.
Contacts are rated 2 amps at 28 VDC or 120 Vac.

There are also two open-collector outputs at terminals TB-14 and TB-15. The open­collector circuit is a current-sinking type rated at 30 VDC and 40 mA maximum. An
external power supply (30 VDC max) must be used to power the open-collector
outputs. The drive does not have a dedicated power supply for the open-collector
outputs.

The Form C relay and open-collector outputs can be programmed for many
different status indications. See Parameters 52 - TB14 OUT, 53 - TB-15 OUT, and
54 - RELAY.

32

15.0 MC3000 CONTROL WIRING DIAGRAMS

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15.1 MC3000 TERMINAL STRIP

Shown below is the terminal strip on the main control board, along with a brief
description of the function of each terminal. Wiring shown above the terminal strip
indicates internal wiring on the main control board.

FORM C

The TB-2 terminals are internally tied together

RELAY

1 2 5A 5B 6 10A 12A RXA TXB10B 2 13A 13B 13C 13D 14 15 2

STOP

CIRCUIT COMMON

NOTE: The function of terminals TB-10A, TB-10B, TB-13A, TB-13B, TB-13C,
TB-13D, TB-14, TB-15, TB-16, and TB-18 are dependent on the programming of
certain parameters. In most cases, the name of the parameter matches the number
of the terminal, allowing quick and easy programming of the terminals to suit the
application. The exception is TB-16 and TB-18, which are governed by Parameter

54 - RELAY.

A complete description of operating the drive in the REMOTE mode can be found
in Section 14.2. The following diagrams provide a quick reference to wire the drive
for the most common configurations.

10 VDC SUPPLY FOR SPEED POT

0-10 VDC SPEED REFERENCE INPUT

0-10 OR 2-10 VDC OUTPUT: FREQUENCY

4-20 mA SPEED REFERENCE INPUT

START

0-10 OR 2-10 VDC OUTPUT: LOAD

CIRCUIT COMMON

TB-13A FUNCTION SELECT

TB-13B FUNCTION SELECT

TB-13D FUNCTION SELECT

TB-13C FUNCTION SELECT

CIRCUIT COMMON

OPEN-COLLECTOR OUTPUT

OPEN-COLLECTOR OUTPUT

16 17 18

RS-485 SERIAL

COMMUNICATIONS

33

15.2 TWO-WIRE START/STOP CONTROL

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Shown below is the wiring diagram for a typical two-wire start/stop control scheme,
using one maintained contact (such as that from a PLC) for RUN and STOP
commands. Close the contact to RUN, and open the contact to STOP. Also shown
is the wiring for a 0-10 VDC or 4-20 mA speed reference signal.

The TB-2 terminals are internally tied together

1 2 5A 5B 6 10A 12A RXA TXB10B 2 13A 13B 13C 13D 14 15 2

0-10 VDC or 4-20

0-10 VDC INPUT

CIRCUIT COMMON

STOP

4-20 mA INPUT

MAINTAINED

RUN/STOP

CONTACT

START FORWARD

CIRCUIT COMMON

FWD REV

START REVERSE

(see Note 2)

mA SELECT (see

16 17 18

NOTES:

1. Close TB-1 to TB-2 to RUN, and open to STOP.

2. If REVERSE direction is required, TB-13C must be set to START REVERSE
(refer to Parameter 49 - TB13C). If REVERSE is not required, simply jumper
TB-12A to TB-2.

3.

Program
signal that will control the drive speed (refer to Parameters 47, 48, and

49). When that TB-13 terminal is closed to TB-2, the drive will respond
to the selected speed reference signal. In the diagram above, TB-13A is
programmed to select either a 0-10 VDC or 4-20 mA signal.

4.

If
speed reference, the drive will default to keypad speed control.

the

TB-13A,

closure is not made between TB-13A and TB-2 to select a

contact

or 13C to select the appropriate speed reference

13B,

34

15.3 THREE-WIRE START/STOP CONTROL

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Shown below is the wiring diagram for a typical three-wire start/stop control scheme,
using momentary contacts (such as pushbuttons) for START and STOP commands.
Also shown is the wiring for a 0-10 VDC or 4-20 mA speed reference signal

The TB-2 terminals are internally tied together

1 2 5A 5B 6 10A 12A RXA TXB10B 2 13A 13B 13C 13D 14 15 2

0-10 VDC or 4-20

0-10 VDC INPUT

CIRCUIT COMMON

STOP

4-20 mA INPUT

MOMENTARY

STOP CON-

START FORWARD

CIRCUIT COMMON

FWD REV

MOMENTARY

START CON-

START REVERSE

(see Note 2)

mA SELECT (see

16 17 18

NOTES:

1. Momentarily close TB-12A to TB-2 to START, and momentarily open TB-1
to TB-2 to STOP.

2. If REVERSE direction is required, TB-13C must be set to START REVERSE
(refer to Parameter 49 - TB13C). If REVERSE is not required, connect the
other side of the start button to TB-12A.

3. Program TB-13A, 13B, or 13C to select the appropriate speed reference
signal that will control the drive speed (refer to Parameters 47, 48, and

49). When that TB-13 terminal is closed to TB-2, the drive will respond
to the selected speed reference signal. In the diagram above, TB-13A is
programmed to select either a 0-10 VDC or 4-20 mA signal.

4. If the contact closure is not made between TB-13A and TB-2 to select a
speed reference, the drive will default to keypad speed control.

35

15.4 SPEED POT AND PRESET SPEED CONTROL

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Shown below is the wiring diagram for a control scheme that utilizes a speed
pot and PRESET SPEEDS for speed control, and either a two-wire or three-wire
START/STOP circuit:

The TB-2 terminals are internally tied together

1 2 5A 5B 6 10A 12A RXA TXB10B 2 13A 13B 13C 13D 14 15 2

PRESET SPEED #2

0-10 VDC INPUT

CIRCUIT COMMON

STOP

SPEED POT

(10 K)

10 VDC SUPPLY

CIRCUIT COMMON

PRESET SPEED #1

START

PRESET SPEED #3

CIRCUIT COMMON

16 17 18

NOTES:

1. Program the PRESET SPEEDS (Parameters 1-4) to the desired values.

2. Program TB-13A to select SPEED #1, TB-13B to select SPEED #2, and
TB-13C to select SPEED #3 (see Parameters 47, 48 and 49).

3. To select a preset speed, close the appropriate preset speed terminal to
TB-2. To select SPEED #4, close any two of the preset speed terminals to

TB-2.

4. For speed pot control, one of the TB-13 terminals needs to be programmed
to select 0-10 VDC. Close the selected TB-13 terminal to TB-2 for speed
pot control. This will result in the loss of one of the preset speeds.

5. If none of the preset speeds (or the speed pot) are selected via contact
closures, the drive will default to keypad speed control.

36

16.0 PROGRAMMING THE MC3000 DRIVE

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16.1 PROGRAMMING THE PARAMETERS

The MC3000 keypad serves two purposes: operating the drive when in the LOCAL
mode, and programming the parameters for particular applications. The keypad
is shown below, along with the display that should appear when the drive is first
powered up:

STOP > 20.00 HZ

PROG

RUN

ENTER

To program the drive, the PROGRAM mode must be entered by pressing the PROG/
RUN button. If the password protection is disabled, pressing the PROG/RUN button
will result in direct entry into the PROGRAM mode. If the password protection is
enabled, the PASSWORD prompt will appear when an attempt is made to enter the
PROGRAM mode. The PASSWORD prompt appears as follows:

AUTO

MAN

LOCAL

REMOTE

START

STOP

PASSWORD 0000

CURSOR

To enter the password, use the UP and DOWN arrow keys to scroll to the password
value, and then press the ENTER key.

NOTE: The factory default password is 0019.

37

Once the correct password is entered, the PROGRAM mode will be entered and

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the first parameter will be displayed, which is Parameter 0 - LINE VOLTS. This is
shown below:

PARAMETER

NAME

PARAMETER

VALUE

LINE VOLTS AUTO

CURSOR

To scroll through the parameters, use the  and  keys on the keypad. When
the desired parameter is found, press the ENTER key to shift the cursor from the
parameter name to the parameter value. In this example, the cursor shifts from
LINE VOLTS to AUTO:

PARAMETER

NAME

PARAMETER

VALUE

LINE VOLTS AUTO

CURSOR

The parameter value can then be changed using the  and  keys. If the parameter
has a numerical value, the  key will increase the value and the  key will decrease
the value. If the parameter has specific choices that can be selected, the  and 
keys will scroll through the list of possible settings. When the desired value or option
is selected, press the ENTER key to store the new setting. If the new setting is not
ENTERED, it will not take effect and the old setting will still be valid.

If the PROG/RUN key is pushed while the cursor is highlighting the parameter value,
the value will change back to the original setting (if it had been changed, but not
ENTERED), and the cursor will shift back to the parameter name. Pressing PROG/
RUN again will exit the PROGRAM mode. If the PROGRAM mode is entered again
within two minutes, the last parameter that was viewed, or changed, will come up on
the display. After two minutes has elapsed, the password will have to be entered
again when attempting to access the PROGRAM mode.

16.2 PARAMETER ACCESS USING SPEED DIAL

SPEED DIAL is used to access parameters quickly using the parameter number.
Once accessed, the parameter can be programmed as described in Section 16.1.

38

SPEED DIAL is accessed by pressing the AUTO/MAN key while in the PROGRAM

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mode. This will activate the SPEED DIAL display as shown below:

- SPEED DIAL -

Once in SPEED DIAL, the  and  keys will allow the operator to scroll through the
parameter numbers. The display will continue to show SPEED DIAL while scrolling
through the parameter numbers, as shown below:

#11 SPEED DIAL

When the desired parameter is reached, the SPEED DIAL display will be replaced
by the parameter name:

#11 MAX FRQ

Once the desired parameter is displayed on the screen, press the ENTER key to
display the parameter name and present setting. The parameter setting can now
be changed by the method described in Section 16.1. Press the AUTO/MAN key
to return to SPEED DIAL.

NOTE: SPEED DIAL is only active in MC3000 drives which have the Modbus

al communications protocol. Units that have the Metasys protocol do not

seri
hav

e this feature.

39

17.0 PARAMETER MENU

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PARAMETER MENU

PARAM.

NUMBER

0 LINE VOLTS HIGH, LOW, AUTO AUTO

1 SPEED #1 MIN FRQ - MAX FRQ 20.00 Hz

2 SPEED #2 MIN FRQ - MAX FRQ 20.00 Hz

3 SPEED #3 MIN FRQ - MAX FRQ 20.00 Hz

4 SPEED #4 MIN FRQ - MAX FRQ 20.00 Hz

5 SKIP #1 .00 Hz - MAX FRQ .00 Hz

6 SKIP #2 .00 Hz - MAX FRQ .00 Hz

7 BAND WID .00 - 10.00 Hz 1.00 Hz

8 ACCEL (NOTE 1) 30.0 SEC

9 DECEL (NOTE 1) 30.0 SEC

10 MIN FRQ .00 - MAX FRQ .50 Hz

11 MAX FRQ MIN FRQ - 120.0 Hz 60.00 Hz

12 DC BRAKE (NOTE 1) .0 VDC

13 DC TIME .0 - 999.9 SEC .0 SEC

14 DYN BRAKE OFF, ON OFF

PARAMETER

NAME

RANGE OF

ADJUSTMENT

FACTORY
DEFAULT

16 CURRENT 25 - 180 % (NOTE 2) 180%

17 MOTOR OL 25 - 100 % 100%

18 BASE 20.00 - 360.0 Hz 60.00 Hz

19 FX BOOST .0 - 30.0 % (NOTE 1)

22 TORQUE

NOTE 1: Refer to SECTION 18.0 - DESCRIPTION OF PARAMETERS

NOTE 2: If line volts is set to "LOW" (or set to "AUTO" and the input voltage is

low), the range is 25 - 150%.

CONSTANT, VARIABLE,

CT / NOCMP

CONSTANT

40

PARAMETER MENU

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PARAM.

NUMBER

23 CARRIER 2.5, 6, 8, 10, 12, 14 kHz 2.5 kHz

25 START

26 STOP RAMP, COAST COAST

28 AUTO/MAN

30 CONTROL

31 UNITS

32 HZ MULT .10 - 650.0 1.00

33 UNITS DP

34 LOAD MLT 95 - 139 % 100%

35 CONTRAST LOW, MED, HIGH MED

36 SLEEP TH .00 - 360.0 Hz .00 Hz

37 SLEEP DL .0 - 300 SEC 30.0 SEC

38 SLEEP BW FB @ MIN - FB @ MAX 0%

39 TB5 MIN .00 - 360.0 Hz .00 Hz

40 TB5 MAX .00 - 360.0 Hz 60.00 Hz

41 AIN FLTR 0.01 - 10.0 SEC 0.02 SEC

42 TB10A OUT NONE, 0-10V, 2-10V NONE

43 @TB10A 3.00 - 360.0 Hz 60.00 Hz

44 TB10B OUT NONE, 0-10V, 2-10V NONE

45 @TB10B 10 - 200 % 125 %

PARAMETER

NAME

RANGE OF

ADJUSTMENT

NORMAL, POWER UP,

AUTO 1, AUTO 2, AUTO 3

A / M LOC, AUTO,

MANUAL, A / M SPD

LOCAL, REMOTE, SERIAL,

KEYPAD 2

sp: HERTZ, RPM, % HZ,

/SEC, /MIN, /HR, GPH, NONE

speed: HERTZ

pid: %, PSI, FPM, CFM, GPM, IN,

FT, /SEC, /MIN, /HR, F, C, MPM,

GPH

XXXXX, XXX.X, XX.XX,

X.XXX, .XXXX

FACTORY
DEFAULT

NORMAL

A / M LOC

LOCALKEYPAD, TB STRIP,

XXXXX

41

PARAMETER MENU

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PARAM.

NUMBER

47 TB13A

48 TB13B

49 TB13C

50 TB13D

52
53
54

55 TB5B LOSS NONE, FAULT, SP#4 FAULT

57 SERIAL DISABLED, W/TIMER, W/O TIMR DISABLE

58 ADDRESS

61 PASSWORD 0000 - 9999 0019

63 SOFTWARE (VIEW - ONLY) (N/A)

64 MONITOR OFF, ON ON

65 PROGRAM

66 HISTORY MAINTAIN, CLEAR MAINTAIN

70 PID MODE OFF, NORMAL, REVERSE OFF

74 PID FB TB-5A, TB-5B TB-5A

75 FB @ MIN -32500 to 32500 0.0%

76 FB @ MAX -32500 to 32500 100.0%

77 P GAIN 0.0 - 999.9% 5.00%

78 I GAIN 0.0 - 10.0 SEC 0.0 SEC

PARAMETER

NAME

TB14 OUT
TB15 OUT

RELAY

RANGE OF

ADJUSTMENT

NONE, 0-10VDC, 4-20MA,

DEC FREQ

NONE, 0-10VDC, 4-20MA,

SPEED#2, INC FREQ

NONE, 0-10VDC, 4-20MA,

STRT REV

EXT FAULT EXT/FAULT,

EXT CLEAR

NONE, RUN, FAULT, /FAULT,

LOCK, @ SPEED, ABOVE #3,

I LIMIT, AUT/MAN, FLWR PR,

MIN/MAX, / MIN/MAX, MIN ALR,

/ MIN ALR, MAX ALR,

/ MAX ALR, REVERSE

1 - 247 (Modbus)

1 - 255 (Metasys)

MAINTAIN, RESET 60,

RESET 50

FACTORY

DEFAULT

EXT FAULT

NONESPEED#1, LOC SEL,

NONE

NONESPEED#3, LOC SEL,

NONE

30

RESET 60

42

PARAMETER MENU

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PARAM.

NUMBER

79 D GAIN 0.0 - 10.0 SEC 0.0 SEC

80 PID ACC 0.0 - 100.0 SEC 30.0 SEC

81 MIN ALRM FB @ MIN - FB @ MAX 0.0%

82 MAX ALRM FB @ MIN - FB @ MAX 0.0%

98 LANGUAGE (NOTE 1) ENGLISH

99 FAULT HISTORY (VIEW - ONLY) (N/A)

NOTE 1: Refer to SECTION 18.0 - DESCRIPTION OF PARAMETERS

PARAMETER

NAME

RANGE OF

ADJUSTMENT

FACTORY
DEFAULT

43

18.0 DESCRIPTION OF PARAMETERS

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0 LINE VOLTS (LINE VOLTAGE)

This parameter calibrates the drive for the correct input voltage, and can be set to
AUTO, HIGH, or LOW.

When set to AUTO, the drive measures the DC bus voltage when power is applied
and automatically calibrates itself according to the measured value (DC bus voltage
is equal to input voltage multiplied by 1.4).

This parameter can also be set “manually”, using the HIGH or LOW settings. For
actual line voltages of 220 - 240 Vac (on 240/200 Vac models), 460 - 480 Vac (on
480/400 Vac models), or 575 - 600 Vac (on 590/480 Vac models), set this parameter
to HIGH. Also use the HIGH setting for 240/120 Vac single-phase input models.
Refer to the table below.

For actual line voltages of 200 - 208 Vac (on 240/200 Vac models), 380 - 415 Vac
(on 480/400 Vac models), or 460 - 480 Vac (on 590 Vac models), set this parameter
to LOW. Refer to the table below.

INPUT LINE VOLTAGE SELECTION

MODEL

M3100S 240 / 120 Vac 1 220 - 240 Vac HIGH

M3200(S) 240 Vac 1 220 - 240 Vac HIGH

M3400 480 / 400 Vac 3 460 - 480 Vac HIGH

M3500 590 / 480 Vac 3 575 - 600 Vac HIGH

RATED INPUT

VOLTAGE

240 / 120 Vac 1 110 - 120 Vac HIGH

240 / 200 Vac 3 220 - 240 Vac HIGH

240 / 200 Vac 3 200 - 208 Vac LOW

480 / 400 Vac 3 380 - 415 Vac LOW

590 / 480 Vac 3 460 - 480 Vac LOW

INPUT

PHASE

ACTUAL INPUT

VOLTAGE

PARAM.

SETTING

1

-4 S

PEED #1- #4 (PRESET SPEEDS #1, #2, #3, AND #4)

PRESET SPEEDS are only active when the drive is in AUTO mode, and are activated
via contact closures between terminal TB-2 and terminals TB-13A, TB-13B, and
TB-13C. These terminals must be programmed as preset speed selects using

Parameters 47 - 49: TB13A, TB13B, and TB13C.

The preset speeds can only be set to values that are within the operating range
defined by the minimum and maximum frequency (see Parameters 10 and 11).

The following table shows how each preset speed is selected using the TB-13
terminals. The terms OPEN and CLOSED refer to the state of the TB-13 terminal
relative to TB-2.

PRESET ACTIVATION

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PRESET # TB - 13A TB - 13B TB - 13C

5,6 SKIP #1 & #2 (SKIP SPEED #1 & #2)

7 BAND WID (SKIP BANDWIDTH)

These parameters are used to prevent the drive from operating continuously at critical
frequencies that cause excessive mechanical vibration of the driven equipment. The
SKIP SPEEDS (Parameters 5 and 6) and the SKIP BANDWIDTH (Parameter 7) are
used to define up to two speed avoidance ranges. The SKIP SPEED settings define
the starting point of the speed range that is to be avoided, and the SKIP BANDWIDTH
setting defines how far the speed range extends beyond SKIP SPEED. Setting the

SKIP SPEEDS to .00 Hz disables this function.

Example: The critical frequency is 21 Hz, and a bandwidth of 2 Hz is desired.
Therefore, set SKIP #1 to 20 Hz and set SKIP BANDWIDTH to 2 Hz. This results in
a speed range from 20 Hz to 22 Hz that the drive will not operate within continuously.
If the drive were operating at 25 Hz and then commanded to operate at a speed
within the range of avoidance, the drive would decelerate to 22 Hz and remain at
that frequency until commanded to 20 Hz or below. The drive would then decelerate
through the range of avoidance to the new frequency. Likewise, if the drive were
operating at 18 Hz, and then commanded to operate at a speed within the range of
avoidance, the drive would accelerate to 20 Hz and remain at that frequency until
commanded to a speed of 22 Hz or above. The drive would then accelerate through

the range of avoidance to the new frequency.

8 ACCEL (ACCELERATION TIME)

ACCEL sets the acceleration rate for all speed reference sources (keypad, speed
pot, 4-20 mA, 0-10 VDC, jog, and the preset speeds). The ACCEL setting is the time
to accelerate from 0 Hz to the BASE FREQUENCY (Parameter 18). The range of
adjustment for ACCEL depends on horsepower. Refer to the table below:

ACCELERATION LIMITS

HORSEPOWER RANGE OF ADJUSTMENT

0.25 - 20 0.1 - 3600 SEC

25 - 60 0.3 - 3600 SEC

Example: If ACCEL is set to 30 seconds, and the BASE FREQUENCY is set to 60
Hz, the drive will ramp from 0 Hz to 60 Hz in 30 seconds. This is a linear function,

therefore the drive would ramp up to 30 Hz in 15 seconds, etc.

45

NOTE: The ability to accelerate a given load at a particular rate is limited by the

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output power capability of the drive/motor combination. The acceleration of high­inertia and high-friction loads may be affected by the current limiting characteristics
of the drive. See Parameters: 16 - CURRENT, 19 - FX BOOST, and 20 - AC BOOST

for more information.

9 DECEL (DECELERATION TIME)

DECEL sets the deceleration rate for all speed reference sources. The DECEL
setting is the time to decelerate from BASE FREQUENCY to 0 Hz. As with Parameter
8 - ACCEL, this is a linear function. If the drive is set to coast to a stop, DECEL
will have no effect when a STOP command is given. The range of adjustment for
DECEL depends on horsepower, voltage, and whether Dynamic Braking (DB) is
being used. Refer to the table below:

DECELERATION LIMITS

HORSEPOWER / VOLTAGE RATING RANGE OF ADJUSTMENT

(NOTE 1) (NOTE 2)

0.25 - 7.5 HP 1 - 7.5 HP ---- 0.3 - 3600 SEC 0.1 - 3600 SEC

10 - 15 HP 10 - 20 HP 1 - 7.5 HP 0.5 - 3600 SEC 0.1 - 3600 SEC

20 - 30 HP 25 - 60 HP 10 - 20 HP 1.0 - 3600 SEC 0.2 - 3600 SEC

---- ---- 25 - 60 HP 2.0 - 3600 SEC 0.2 - 3600 SEC

NOTE

1: 240/120 Vac units have the same limits as 240/200 Vac units.

NOTE 2: This parameter can be set as low as the value shown in the WITH DB

column. However, the value shown in the WITHOUT DB column is the operational
limit of a drive without dynamic braking. For example, DECEL can be set as low
as 0.1 seconds on a 10 HP, 480 Vac drive without dynamic braking, but the actual
minimum deceleration time would be 0.5 seconds.

If an attempt is made to decelerate a high-inertia load too quickly, the motor will
regenerate voltage back into the drive. This will cause the DC bus voltage to rise,
which can result in a HI VOLTS fault. In order to prevent faulting, the drive will enter
DECEL FREEZE, which halts the deceleration until the DC bus voltage returns to
a normal level. The drive will then begin to decelerate again, and if necessary, will
enter DECEL FREEZE repeatedly to avoid faulting. If a very short deceleration
time is programmed, DECEL FREEZE may not be able to compensate fast enough,
resulting in a HI VOLTS fault.

In applications where very short deceleration times are required on high-inertia
loads, dynamic braking may be required. Consult the factory for more information

on the Dynamic Braking option.

10 MIN FRQ (MINIMUM FREQUENCY)

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This parameter defines the lower limit of the drive’s speed range. MIN FRQ is
used in conjunction with MAX FRQ (Parameter 11 below) to define the operating

range of the drive.

If MIN FRQ is set to a value above 0.0 Hz, the drive will ramp up from 0.0 Hz when
given a start command. Once running, however, the drive will not operate below
the MIN FRQ setting unless the rotation is changed, or a stop command is issued
and the drive is programmed to ramp to a stop.

If the MINIMUM FREQUENCY is set to 0.0 Hz, the drive may be operated in ZERO
SPEED mode (drive is in RUN state, but there is no output to the motor). ZERO
SPEED operation can be used in applications requiring the ability to start and stop
the drive using only the selected speed reference. The drive will start when the
speed reference is raised above 0 VDC or 4 mA, and it will stop when the reference
is lowered to 0 VDC or 4 mA. Note that the drive must be initially started using one

of the normal start commands (keypad or terminal strip).

11 MAX FRQ (MAXIMUM FREQUENCY)

This parameter defines the upper limit of the drive’s speed range. MAX FRQ is
used in conjunction with MIN FRQ (Parameter 10 above) to define the operating
range of the drive.

WARNING!

Consult motor manufacturer before operating motor above rated frequency.
Overspeeding the motor and/or driven equipment can cause damage to
equipment and injury to personnel!

12 DC BRAKE (DC BRAKE VOLTAGE)

DC braking creates a braking torque by injecting DC voltage into the motor. This
parameter sets the magnitude of that DC voltage. The point at which the drive
applies DC braking to the motor depends on which STOP mode is programmed
(either COAST or RAMP, see Parameter 26 - STOP).

If the drive is set to COAST, DC braking is activated when the stop command
is given. In this case, DC braking helps decelerate the motor. This is useful in
applications where a quick deceleration is desired on a load that would normally
take a long time to coast to a stop.

If the drive is set to RAMP, DC braking is activated when the output frequency
reaches 0 Hz. In this case, the drive decelerates the load to a near stop and then
DC braking is used to stop and hold the motor. This is useful in applications where
the load needs to be stopped in a certain position. Similar applications with high­inertia loads utilize both dynamic braking and DC braking. The dynamic braking
allows the high-inertia load to be decelerated quickly, while the DC braking stops
the load in the desired position.

Due to heat generated in the motor, DC braking should only be used in applications
where the load is stopped infrequently. In high duty-cycle applications, dynamic
braking is recommended because the heat is dissipated through external resistor
banks, rather than in the motor. When used, DC BRAKE should be set to the lowest
voltage that provides satisfactory operation in order to minimize motor heating. The
maximum voltage available depends on the voltage rating of the drive.

Refer to the table below:

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MAXIMUM DC BRAKE VOLTAGE

MODEL M3100

240 / 120 Vac

MODEL M3200

240 / 200 Vac

MODEL M3400

480 / 400 Vac

MODEL M3500

590 / 480 Vac

24 VOLTS 24 VOLTS 48 VOLTS 59 VOLTS

13 DC TIME (DC BRAKE TIME)

This parameter determines the length of time that the DC braking voltage is applied
to the motor. DC TIME should be set to the lowest value that provides satisfactory
operation in order to minimize motor heating.

NOTE: If this parameter is set to 999.9 seconds (the maximum value), the DC
braking will be continuous. If it is set to .0 seconds, it is disabled.

14 DYN BRAKE (DYNAMIC BRAKE)

This parameter enables the dynamic braking circuit. Set this parameter to ON only
if the optional dynamic braking circuit board and resistors are installed.

Dynamic braking is used in applications where high-inertia loads need to be
decelerated quickly. When this is attempted, the motor regenerates voltage back
into the drive, causing the DC bus voltage to rise, eventually resulting in a HI
VOLTS fault. With the dynamic braking option, the DC bus voltage is monitored,
and when it reaches a certain level, a transistor is switched on that connects an
external resistor bank across the DC bus. This allows the regenerated energy from
the motor to be dissipated through the resistors as heat, which keeps the DC bus
voltage below the trip level.

16 CURRENT (CURRENT LIMIT)

This parameter sets the maximum allowable output current of the drive, which also
determines the torque capability of the motor. For most applications, CURRENT is
left at the maximum setting, which is 150% or 180% (of the drive’s output current
rating), depending on whether the input voltage is low or high (see Parameter 0 - LINE
VOLTS). Regardless of the CURRENT setting, the drive is capable of delivering a
maximum of 150% current for one minute, and 180% current for approximately 30
seconds, before tripping into an OVERLOAD fault. See Parameter 17 – MOTOR
OL below.

The drive will enter current limit when the load demands more current than the drive
can deliver, which results in a loss of synchronization between the drive and the
motor. To correct this condition, the drive will enter FREQUENCY FOLDBACK,
which commands the drive to decelerate in order to reduce the output current and
regain synchronization with the motor. When the overcurrent condition passes,
the drive will return to normal operation and accelerate back to the speed setpoint.
However, if FREQUENCY FOLDBACK cannot correct the condition and the drive
remains in current limit for too long, it will trip on an OVERLOAD fault. If the drive
enters current limit while accelerating, the time required to reach the speed setpoint
will be longer than the time programmed into ACCEL (Parameter 8).

17 MOTOR OL (MOTOR OVERLOAD)

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The MC3000 Series is UL approved for solid state motor overload protection.
Therefore, a separate thermal overload relay is not required for single motor
applications. The MOTOR OVERLOAD circuit is used to protect the motor from
overheating due to excessive current draw.

The trip time for the MOTOR OVERLOAD is based on an “inverse I2t” function. This
function allows the drive to deliver 150% of the rated output current for one minute,
and even higher current levels for shorter periods of time. Once the overload circuit
“times out”, the drive will trip into an OVERLOAD fault.

The MOTOR OVERLOAD should be set to a value which is equal to the ratio (in
percentage) of the motor full load current rating to the drive output current rating.
This will result in an overload capacity of 150% of the MOTOR current rating for one
minute. If this parameter is set to 100%, the motor will be allowed to draw 150%
of the DRIVE output current rating for one minute. This distinction is important in
cases where the motor full load current rating is significantly less than the drive
output current rating, such as applications where the drive is oversized to meet
torque requirements.

Example 1: A 5 Hp, 480 Vac drive is operating a 3 HP motor with a full load current
rating of 4.8 amps. Divide the motor current rating by the drive output current rating:

4.8 / 7.6 = 63%. Entering this value will allow continuous operation at 4.8 amps,
and will also allow the motor to draw 7.2 amps (150% of 4.8 amps) for one minute.
If the setting is left at 100%, the motor could draw 11.4 amps (150% of 7.6 amps)
for one minute before faulting.

The MC Series drive has two options for thermal overload protection. One depends
on the speed of the drive, while the other does not. The diagram below illustrates
the difference between “speed compensated” and “non-compensated” thermal
overload protection.

NON-COMPENSATED

100

80

60

40

20

MAXIMUM CONTINUOUS

OUTPUT CURRENT (%)

SPEED COMPENSATED

10 20 30 40 50 60

FREQUENCY (Hz)

The “speed-compensated” thermal overload circuit offers additional protection
from high load conditions at low speeds, where motor cooling is often less effective
(e.g., motors with shaft-mounted fans). As seen on the diagram below, the drive
reduces the allowable continuous output current when operating at frequencies
less than 30 Hz.

Example 2: A 480 Vac, 20 HP drive is operating a motor at 10 Hz. From the

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diagram, a drive operating at 10 Hz can deliver about 75% of its output current
rating continuously. A 480 Vac, 20 HP drive’s output current rating is 27 Amps.
Therefore, the drive would be able to operate continuously at 20 Amps. The drive
would also be able to deliver 150% of that value (30 Amps) for one minute before
tripping into an OVERLOAD fault.

The “speed compensated” thermal overload is the factory default and should be
used in applications where the motor does not normally experience high loads at
low speeds for extended periods of time.

NOTE 1: The above diagram is based on a MOTOR OL setting of 100%. For lower
MOTOR OL settings, reduce the % CURRENT values by the same percentage. For
example, if MOTOR OL is set to 75%, reduce the % CURRENT values by 25%.
Therefore, the curve shifts down, but the shape of the curve remains the same.

The “non-compensated” thermal overload circuit allows 100% current continuously,
and 150% current for one minute, at all speeds. In the example above, the motor
operating at 10 Hz without “speed-compensated” protection would be allowed to
operate continuously at 27 Amps, and could draw 40.5 Amps for one minute before
tripping. Without sufficient motor cooling, this can result in motor failure due to
overheating.

The “non-compensated” circuit is selected by setting Parameter 22 - TORQUE to
CT/NOCMP. The “non-compensated” setting should only be used in applications
where the motor is properly cooled at all speeds, or the motor manufacturer has

approved the motor for full-load operation at low speeds.

NOTE 2: The operation of the motor thermal overload circuit is affected by the
setting of Parameter 34 - LOAD MLT.

18 BASE (BASE FREQUENCY)

The BASE FREQUENCY determines the V/Hz ratio by setting the frequency at
which the drive will output full voltage to the motor. For most applications the base
frequency should be set to match the motor’s rated frequency.

For example, if the drive is rated for 460 Vac output, and the BASE FREQUENCY is
set to 60 Hz, the drive will maintain a constant ratio of 7.66 V/Hz (except when FX
BOOST is active, see Parameter 19) from 0 Hz to 60 Hz. This range is the region
of constant torque. If the motor speed is increased past 60 Hz, the output voltage
remains constant while the frequency increases, resulting in a reduced V/Hz ratio.
This range, from 60 Hz to about 90 Hz, is the region of constant horsepower. Above
90 Hz, horsepower begins to decrease as frequency increases. Refer to Section

6.1 - DESCRIPTION OF AC MOTOR OPERATION.

19 FX BOOST (FIXED BOOST)

This parameter is used in applications which require high starting torque. FX BOOST
increases the output voltage at lower output frequencies (below 30 Hz for 60 Hz
base frequency), in order to boost the torque capability of the motor. Refer to the
diagram below. The factory default for FX BOOST depends on the horsepower
rating of the drive. Refer to the following table:

FX BOOST FACTORY DEFAULT SETTINGS

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HP

FACTORY
DEFAULT

HP

FACTORY

DEFAULT

0.25 - 1 5.30 % 15 2.20 %

1.5 - 2 4.40 % 20 2.00 %

3 3.60 % 25 1.80 %

5 3.00 % 30 1.60 %

7.5 2.70 % 40 1.20 %

10 2.40 % 50 - 60 0.80 %

The diagram below illustrates how FX BOOST alters the V/Hz ratio to increase
motor torque.

The FX BOOST setting represents the amount of boost at 0 Hz (approximately
15% in the example below), and as the output frequency approaches 30 Hz, the
boost decreases to zero. Therefore, at 30 Hz and above, the V/Hz ratio returns to
its “normal” state.

100

90

80

70

60

FX BOOST

50

40

30

20

OUTPUT VOLTAGE (%)

10

CONSTANT V/Hz

10

20 30

40 50 60

OUTPUT FREQUENCY (Hz)

22 TORQUE (TORQUE CURVE SELECTION)

This parameter is used to select whether the output of the drive follows a constant
or variable V/Hz curve. The following selections are available:

CONSTANT Use for constant torque applications to optimize torque.

VARIABLE Use for variable torque applications to optimize energy

CT / NOCMP Use

savings.

for constant torque applications that require full overload
capacity at low speeds (see Parameter 17 - MOTOR
OL).

23 CARRIER (CARRIER FREQUENCY)

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This parameter sets the carrier frequency, or switching frequency of the output
IGBT’s. Higher switching rates result in less audible noise to be emitted from the
motor, but the efficiency of the drive decreases as the carrier frequency increases.
Therefore, this parameter should be set to the lowest value which yields acceptable
sound levels. Available settings are: 2.5 kHz, 6 kHz, 8 kHz, 10 kHz, 12 kHz and
14 kHz.

NOTE 1: The 2.5 kHz carrier frequency setting is a variable carrier. The carrier
frequency remains fixed at 1.5 kHz up to 25 Hz output frequency. Above 25 Hz,
the carrier is a fixed multiple of 60 times the drive’s output frequency. For example,
if the output frequency of the drive was set to 45 Hz, the carrier frequency would
be 2.7 kHz (45 Hz x 60 = 2700 Hz). The other settings are constant carriers that
remain fixed for the entire speed range.

NOTE 2: The ability to operate a drive at higher carrier frequencies is dependent
on the drive horsepower rating, driven load, drive enclosure, and the ambient
temperature. Operation above 8kHz requires derating the drive by multiplying the
output current rating by the following factors: 0.94 at 10 kHz, 0.89 at 12 kHz, and

0.83 at 14 kHz.

25 START (START MODE)

WARNING!

Automatic start of equipment may result in damage to equipment and/or injury to
personnel! Automatic start should only be used on equipment that is inaccessible
to personnel.

This parameter selects the starting method for the drive, and can be set for one of
the following:

NORMAL The drive will start when the appropriate contact closure is

made on the terminal strip (REMOTE mode), or by pressing
the keypad START key (LOCAL mode). To start the drive
in NORMAL mode, a start command must be issued at
least two seconds AFTER input power is applied.

POWER UP The drive will automatically start upon application of input

power. The drive MUST be set up for a two-wire start/stop
circuit (refer to Section 14.0 - CONTROL WIRING), and the
start command MUST be present when power is applied
for this function to operate.

AUTO 1 FL Y I N G A UTO RE S T A R T - LO W perf o r m a n c e .

Synchronization in approximately 6 seconds with current
levels up to 50% of the drive rating. This setting results in
a slow, smooth synchronization.

AUTO 2 FLYING AUTO REST ART - M EDIUM perf ormance .

Synchronization in approximately 1 second with current
levels up to 50% of the drive rating. This setting allows
faster synchronization while retaining smoothness.

AUTO 3 FL Y I N G A U T O R E S T A R T - HIGH performance.

Synchronization in approximately 1 second with current
levels up to 100% of the drive rating. This setting allows
the fastest synchronization, but sacrifices smoothness.

The AUTO 1 - 3 settings allow the drive to start into a spinning load after a fault or

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upon application of input power. As with POWER UP, the drive MUST be set up
for two-wire start/stop control and the start command MUST be present after a fault
or when power is applied for this function to operate.

POWER UP and AUTO 1 - 3 settings are only active when the drive is in REMOTE
mode (see Parameter 30 - CONTROL).

When set for AUTO 1, 2, or 3, the drive will attempt five restarts after a fault. During
the interval between restart attempts, the drive will display START PENDING to
indicate that the equipment will automatically restart. If all five restart attempts are
unsuccessful, the drive will trip into FAULT LOCKOUT, which requires a manual
reset. Every 15 minutes that passes will decrement the restart counter by one.
Therefore, 75 minutes after a successful restart, the restart counter is fully reset,
and the drive can once again attempt five restarts.

NOTE 1: When set for AUTO 1, 2, or 3, only the first two restart attempts will perform
a speed search to start into a spinning load. The last three restart attempts will apply
DC braking (at the voltage level programmed into Parameter 12 - DC BRAKE) for
15 seconds and then start from zero speed.

NOTE 2: The drive WILL NOT restart after a CONTROL or PWR SAG fault. Also, if
an OUTPUT fault occurs below 1.5 Hz, only one restart will be attempted, after a 30
second delay. If unsuccessful, it will then trip into FAULT LOCKOUT, which requires
a manual reset. This is done to protect the drive in case of a shorted motor.

26 STOP (STOP MODE)

This parameter selects whether the motor will COAST to a stop, or RAMP to a stop,
when the drive is given a stop command.

COAST When a stop command is given, the drive shuts off the output to the

RAMP When a stop command is given, the drive will decelerate the motor to

28 AUTO / MAN (AUTO / MANUAL SPEED CONTROL)

This parameter determines how AUTOMATIC and MANUAL speed control is
selected, and affects the functionality of the AUTO/MAN key on the keypad.

A/M LOC The AUTO/MAN key on the keypad is active only when the drive is in

AUTO The

motor, allowing it to coast to a stop. In this mode, the time it takes the
motor to stop is governed by the inertia of the driven load.

a stop over a period of time according to Parameter 9 - DECEL.

LOCAL mode. In REMOTE mode, the AUTO/MAN key is disabled.

drive will respond to a 0-10 VDC signal, 4-20 mA signal, or one of
the four PRESET SPEEDS, depending on the programming of terminals
TB-13A, TB-13B and/or TB-13C. The AUTO/MAN key is disabled.

NOTE: If no AUTO reference is selected using TB-13A, TB-13B or

TB-13C, speed control defaults to the keypad.

MANUAL The drive will respond to the  and  keys on the keypad. The

A/M SPD The AUTO/MAN key is always active.
NOTE

AUTO/MAN key is disabled.

: If the drive is switched from LOCAL to REMOTE mode, speed
control will switch to AUTO. If the drive is switched from REMOTE
to LOCAL mode, speed control will switch to MANUAL mode. The
AUTO/MAN key can then be used to select the desired mode.

30 CONTROL (START/STOP CONTROL)

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This parameter selects the START/STOP control source, which is either the keypad
(LOCAL), the terminal strip (REMOTE), or the serial link (SERIAL). The LOCAL/
REMOTE key on the keypad is also affected by the setting of this parameter. The

following settings are possible:

LOCAL The drive will only respond to START/STOP commands

from the keypad. The LOCAL/REMOTE key is disabled.

REMOTE The

drive will only respond to START/STOP commands from

the terminal strip. The LOCAL/REMOTE key is disabled.

SERIAL The drive will only respond to START/STOP commands

through the serial link.

KEYPAD The LOCAL/REMOTE key on

the keypad is enabled and
is used to toggle between LOCAL and REMOTE modes.
Press the LOCAL/REMOTE key to select the desired mode
and then press the ENTER key within three seconds.

NOTE: If LOCAL mode is selected, a jumper is required

between TB-1 and TB-2 to allow the drive to START.

TB STRIP The terminal strip is used to select LOCAL or REMOTE

mode. LOCAL mode if TB-13A or TB-13C is set for LOCAL
SELECT and a contact closure is made between TB-13A
or TB-13C and TB-2. If the contact closure is not made,
the drive will be in REMOTE mode.

KEYPAD 2 Acts the same as KEYPAD, but TB-1 is disabled as a STOP

input when in LOCAL mode. Therefore, a jumper is not
required between TB-1 and TB-2 to START in LOCAL
mode.

NOTE 1: The STOP key on the keypad is always active. The STOP input at TB-1
is active unless CONTROL is set to KEYPAD 2 and LOCAL mode is selected.

NOTE 2: Refer to Parameter 70 - PID MODE for information on the effects of LOCAL
and REMOTE mode when operating the drive in PID mode.

31 UNITS (SPEED/PID UNITS)

This parameter sets the units of the output speed or the PID display on the keypad.
The following choices are available:

sp HERTZ pid CFM (cubic feet per minute)
sp RPM (revolutions per minute) pid GPM (gallons per minute)
sp %HZ (percent Hertz) pid IN (inches)
sp /SEC (units per second) pid FT (feet)
sp /MIN (units per minute) pid /SEC (units per second)
sp /HR (units per hour) pid /MIN (units per minute)
sp GPH (gallons per hour) pid /HR (units per hour)
NONE (no units displayed) pid F (degrees Fahrenheit)
pid % (percent of PID feedback) pid C (degrees Celsius)
pid PSI (pounds per square inch) pid MPM (meters per minute)
pid FPM (feet per minute) pid GPH (gallons per hour)

NOTE: If one of the “pid” units is selected, but the drive is in MANUAL (open-loop)
speed control mode or PID MODE is DISABLED, the displayed speed units will

default to HERTZ.

32 HZ MULT (HERTZ MULTIPLIER)

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The HZ MULTIPLIER is used to scale the output speed indication on the display.
This parameter is only active when UNITS is set for sp RPM, sp /SEC, sp /MIN,
or sp /HR. Multiplying the output frequency by the HZ MULTIPLIER will yield the
desired speed value on the display.

Example: The desired speed units is RPM with a standard 60 Hz, 1800 RPM motor.
Set UNITS to sp RPM and set HZ MULT to 30.00. This will result in a display of 1110
RPM for an output frequency of 37 Hz (37 Hz X 30 = 1110 RPM). Also, if there is a
100:1 gear reducer in the system, Parameter 33 - UNITS DP below could be set to

XX.XX to represent the output of the gear reducer (11.10 RPM in the example).

33 UNITS DP (SPEED UNITS DECIMAL POINT)

In “non-PID” mode, UNITS DP selects the decimal point location of the speed display.
UNITS DP has no effect if UNITS is set to sp HERTZ or sp % HZ.

In PID mode, UNITS DP selects the decimal point location for the PID SETPOINT
and FEEDBACK displays, and FB @ MIN and FB @ MAX.

The possible settings are: XXXXX, XXX.X, XX.XX, X.XXX, and .XXXX. Refer to
the above example in Parameter 32 - HZ MULT.

34 LOAD MLT (LOAD MULTIPLIER)

This parameter is used to scale the % LOAD display. If the drive output current rating
is higher than the motor full load current rating, the drive will not display 100% load
when the motor is at full load. Setting this parameter to the ratio (in %) of the drive
output current rating to the motor full load current rating will scale the load display
to show motor load instead of drive load. This will result in a display of 100% when
the motor is at full load.

The motor overload circuitry is also affected by this parameter. When the display
reads 150% load, the drive will trip on OVERLOAD in one minute, regardless of the
actual motor current. If this parameter is used to scale the display to show actual
motor load, then Parameter 17 - MOTOR OL should be left at 100%. Likewise, if
MOTOR OL has been set according to the motor full load rating, this parameter
should be left at 100%. Changing both parameters will result in an OVERLOAD
fault sooner than expected.

The output signal at TB-10B is also affected by this parameter. When set to the
ratio of current ratings as explained above, the output signal will be proportional to
motor load instead of drive load.

35 CONTRAST (LCD DISPLAY CONTRAST)

This parameter is used to adjust the contrast of the drive display and can be set
to LOW, MED, or HIGH in order to obtain the most visible display. If the drive is
mounted lower than eye level, a HIGH setting may make the display more visible.
Likewise, if the drive is mounted higher than eye level, a LOW setting may make
the display more visible.

36 SLEEP TH (SLEEP THRESHOLD)

The MC3000 Series drive has a Sleep Mode function that allows the drive to cease
operation when system demand falls below a preset level. This is to prevent the
motor from operating at low speeds for long periods of time. It is commonly used
along with the PID Setpoint Control feature, but can also be used in standard speed
control mode.

When the commanded speed falls below the SLEEP THRESHOLD setting for the

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defined SLEEP DELAY time (see Parameter 37 below), the drive will "go to sleep"
and the motor will go to zero speed. The drive will remain "sleeping" until it is
commanded to operate at a speed that is 2 Hz above the SLEEP THRESHOLD, at
which point it will "wake up" and ramp the motor up to the commanded speed.

NOTE 1: While the the drive is in Sleep Mode, the Status portion of the display
will read SLEEP.

NOTE 2: If the drive's commanded speed goes below the SLEEP THRESHOLD,
the SLEEP DELAY timer will start to count down. If the commanded speed equals
or exceeds the SLEEP THRESHOLD before the SLEEP DELAY times out, the
SLEEP DELAY timer will be reset.

NOTE 3: If the drive is in a Stop state, and the commanded speed is below the
SLEEP THRESHOLD, the drive will immediately go to sleep upon a Start command,
bypassing the SLEEP DELAY.

37 SLEEP DL (SLEEP DELAY)

This parameter sets the amount of time the drive must operate below the SLEEP
THRESHOLD (see Parameter 36 above) before the drive "goes to sleep" and brings
the motor to zero speed.

Example: SLEEP THRESHOLD is set to 15 Hz and SLEEP DELAY is set to 60
seconds. If the drive operates below 15 Hz for 60 seconds, the drive will "go to
sleep" and the motor will stop. The drive's display will indicate SLEEP, and the
drive will remain "sleeping" until the drive is commanded to a speed equal to or
greater than 17 Hz. At this point, the drive will "wake up" and ramp the motor up
to the commanded speed.

38 SLEEP BW (SLEEP BANDWIDTH)

This parameter allows the PID feedback signal to determine when the drive should
"wake up" when operating in Sleep Mode. In process systems that utilize Integral
Gain (see Parameter 78), the drive may cycle in and out of Sleep Mode more often
than desired, due to the Integral function of the PID algorithm.

When SLEEP BANDWIDTH is used, the feedback signal must decrease or increase
(depending on whether the system is normal or reverse-acting) by the programmed
amount before the drive will "wake up". This parameter is set in PID units.

Example: In a normal-acti ng system, the PID setpoint is 50 PSI, SLEEP
THRESHOLD is set to 20 Hz, and SLEEP BANDWIDTH is set to 5 PSI. The drive
will enter Sleep Mode when the commanded speed drops below 20 Hz for the
time defined in SLEEP DELAY. The drive will wake up when the feedback signal
drops below 45 PSI (50 PSI setpoint minus 5 PSI bandwidth = 45 PSI), even if the
commanded speed is still below 20 Hz.

NOTE: If SLEEP BANDWIDTH is set to 0, this function is disabled, and the drive
will wake up when the commanded speed exceeds the SLEEP THRESHOLD plus
2 Hz, as described in Parameters 36 and 37.

39 TB5 MIN (TERMINAL TB-5 INPUT)

This parameter selects the output frequency of the drive that will correspond to the
minimum analog speed reference input (0 VDC or 4 mA). This parameter is used in
conjunction with Parameter 40 - TB5 MAX to define a speed range that corresponds
to the analog speed reference input (0 - 10 VDC or 4 - 20 mA).

40 TB5 MAX (TERMINAL TB-5 INPUT)

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This parameter selects the output frequency of the drive that will correspond to the
maximum analog speed reference input (10 VDC or 20 mA). This parameter is used
in conjunction with Parameter 39 - TB5 MIN to define a speed range that corresponds
to the analog speed reference input (0 - 10 VDC or 4 - 20 mA).

Example: The drive is required to operate from 0 to 60 Hz in response to a 0-5 VDC
speed reference signal (rather than the “normal” 0-10 VDC). Because TB5 MAX is
based on a 0-10 VDC (or 4-20 mA) signal, the drive will operate at half of the TB5
MAX value if it is given a 5 VDC signal. Therefore, setting TB5 MAX to 120 Hz will
cause the drive to run at 60 Hz when it is given a 5 VDC speed reference signal.

NOTE: The drive can be programmed for inverse operation so that as the speed
reference increases, the drive speed will decrease, and as the speed reference
decreases, the drive speed will increase. This is accomplished by setting TB5 MIN
to the desired maximum output frequency, and TB5 MAX to the desired minimum
output frequency.

41 AIN FLTR (ANALOG INPUT FILTER)

This parameter adjusts the filter on the analog input terminals (TB-5A and TB-5B)
to reduce the effect of any electrical noise that may be present on the analog input
signals. This filter works in both PID mode and standard speed control mode. It
should be set to the lowest value that yields acceptable performance, as setting it
too high may cause the drive to react too slowly to signal changes.

42 TB10A OUT (TERMINAL TB-10A OUTPUT)

The analog output signal at TB-10A is proportional to the output frequency of the
drive. This parameter selects whether that signal is 0-10 VDC or 2-10 VDC. The
2-10 VDC signal can be converted to a 4-20 mA signal by connecting a resistor in
series with the signal such that the total circuit resistance is 500 Ohms. If set to
NONE, the function is disabled.

NOTE: This output cannot be used with “loop-powered” devices that derive power
from a 4-20 mA signal.

43 @ TB10A (TERMINAL TB-10A SCALING)

This parameter scales the analog output signal at TB-10A. This setting is the output
frequency that is indicated when the TB-10A output measures 10 VDC.

Example: The drive is part of a control system that requires a 0-5 VDC signal
(rather than 0-10 VDC) that is proportional to 0-60 Hz output frequency. The output
signal is linear, so setting this parameter to 120 Hz would yield 10 VDC at 120 Hz,
and 5 VDC at 60 Hz.

44 TB10B OUT (TERMINAL TB-10B OUTPUT)

The analog output signal at TB-10B is proportional to the drive load. This parameter
selects whether that signal is 0-10 VDC or 2-10 VDC. The 2-10 VDC signal can
be converted to a 4-20 mA signal by connecting a resistor in series with the signal
such that the total load resistance is 500 Ohms.

NOTE: This output cannot be used with “loop-powered” devices that derive power
from a 4-20 mA signal.

45 @ TB10B (TERMINAL TB-10B SCALING)

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This parameter scales the analog output signal at TB-10B. This setting is the load
(in %) that is indicated when the TB-10B output measures 10 VDC.

Example: The drive is part of a control system that requires a 0-10 VDC signal to
indicate 0-150% drive load. If this parameter is set to 150%, the drive will output
10 VDC at 150% load (and about 6.7 VDC at 100% load).

NOTE: The output signal at TB-10B is affected by the setting of Parameter 34

- LOAD MLT.

47 TB13A (TB-13A INPUT FUNCTION)

This parameter is used to select the function of terminal TB-13A. Closing TB-13A
to TB-2 activates the TB - 13A input function. The following functions can be
selected:

NONE Disables the TB-13A function.

0-10VDC Selects 0-10 VDC as the AUTO speed reference input (or

setpoint source in PID mode). The 0-10 VDC signal is wired
to TB-5A and TB-2.

4-20 MA Selects 4-20 mA as the AUTO speed reference input (or

setpoint source in PID mode). The 4-20 mA signal is wired
to TB-5B and TB-2.

SPEED#1 Selec ts PRE S ET SPE E D #1 as th e AUTO speed

reference.

LOC SEL Selects LOCAL mode when Parameter 30 - CONTROL

is set to TB STRIP. Drive is in REMOTE mode if contact
closure is not made.

DEC FREQ Decrease frequency setpoint. Used with the MOP (motor

operated pot) function. Refer to Section 14.2.6 - SPEED
REFERENCE SELECTION.

48 TB

13B (TB-13B INPUT FUNCTION)

This parameter is used to select the function of terminal TB-13B. Closing TB-13B to
TB-2 activates the TB - 13B function. The following functions can be selected:

NONE Disables the TB-13B function.

0-10VDC Selects 0-10 VDC as the AUTO speed reference input (or

setpoint source in PID mode). The 0-10 VDC signal is wired
to TB-5A and TB-2.

4-20 MA Selects 4-20 mA as

the AUTO speed reference input (or
setpoint source in PID mode). The 4-20 mA signal is wired
to TB-5B and TB-2.

SPEED#2 Sele

ct s PRES E T SPEE D #2 as th e AUTO sp eed

reference.

INC FREQ Incr

ease frequency setpoint. Used with MOP (motor
operated pot) function. Refer to Section 14.2.6 - SPEED
REFERENCE SELECTION.

49 TB13C (TB-13C INPUT FUNCTION)

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This parameter is used to select the function of terminal TB-13C. Closing TB­13C to TB-2 activates the TB-13C input function. The following functions can be
selected:

NONE Disables the TB-13C function.

0-10VDC Selects 0-10 VDC as the AUTO speed reference input (or

setpoint source in PID mode). The 0-10 VDC signal is wired
to TB-5A and TB-2.

4-20 MA Selects 4-20 mA as the AUTO speed reference input (or

setpoint source in PID mode). The 4-20 mA signal is wired
to TB-5B and TB-2.

SPEED#3 Selec ts PRE S ET SPE E D #3 as th e AUTO speed

reference.

LOC SEL LOCAL SELECT - Selects LOCAL mode when Parameter

30 - CONTROL is set to TB STRIP. Drive is in REMOTE
mode if contact closure is not made.

STRT REV START REVERSE - Start in reverse direction.

50 TB13D (TB-13D FUNCTION)

WARNING!

EXTERNAL

FAULT

(TB-13D)

circuitry

may be disabled if parameters are reset
to factory defaults! The drive must be reprogrammed after a RESET in order
to insure proper operation (see Parameter 65 - PROGRAM). Failure to do so
may result in damage to equipment and/or injury to personnel!

This parameter selects the function for the TB-13D.

EXT FAULT Sets TB-13D as a normally open EXTERNAL FAULT

contact. Close TB-13D to TB-2 to trip the drive into an
EXTERNAL FAULT.

EXT / FAULT Sets TB-13D as a normally closed EXTERNAL FAULT

contact. Open TB-13D to TB-2 to trip the drive into an
EXTERNAL FAULT.

EXT CLEAR Sets TB-13D as a normally open EXTERNAL FAULT

RESET. Close TB-13D to TB-2 to clear a fault.

NOTE: When set to EXT CLEAR, TB-13D becomes the only terminal that can be
used to clear a fault (TB-1 will not work). However, the keypad STOP key can still
be used to clear faults.

52 TB14 OUT (TB-14 OPEN COLLECTOR OUTPUT)

This parameter sets the open-collector output indication for terminal TB-14. The
following conditions can be selected:

NONE This setting disables the output.

RUN

The relay energizes when the drive is given a START
command, and remains energized until: a STOP command
is given and the output frequency has decelerated to 0.5 Hz,
the drive has “tripped”, or the input voltage is removed. Note
that this relay indicates only that the drive is in the RUN mode.
It does not necessarily indicate that the motor is turning.

FAULT The relay energizes when input voltage is applied to the

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drive and remains energized until the drive “trips” into a
fault condition, or input voltage is removed.

/ FAULT INVERSE FAULT - The relay energizes when the drive

“trips” into a fault condition, and remains energized until
the fault condition is cleared.

LOCK FAULT LOCKOUT - This

relay is used when the drive is
programmed to automatically restart after a fault. The
relay energizes when input voltage is applied to the drive
and remains energized until the drive has faulted and
unsuccessfully attempted five restarts, or input voltage is
removed.

@ SPEED AT SPEED - The

relay energizes when the drive reaches
the speed setpoint. To avoid a “chattering” relay (energizing
and de-energizing), due to small fluctuations in speed, the
relay will remain energized as long as the actual speed is
within + 3 Hz of the speed setpoint.

ABOVE #3 ABOVE SPEED #3 - The relay energizes when the output

frequency exceeds the SPEED #3 value, and de-energizes
when the output frequency returns to a value lower than the
SPEED #3 value. See Parameter 3 - SPEED #3 in Section

18.0 - DESCRIPTION OF PARAMETERS.

I LIMIT CURRENT LIMIT - The relay energizes when the drive is

operating in current limit. Once the current limit relay is
energized, it remains energized for a minimum of 500ms,
regardless of whether the drive is still in current limit. At
the end of the 500ms interval, the relay will de-energize
if the drive is no longer in current limit. See Parameter
16 - CURRENT in Section 18.0 - DESCRIPTION OF
PARAMETERS.

AUT/MAN AUTO/MANUAL MODE - The relay energizes when the

drive is in the AUTOMATIC mode, and de-energizes in
the MANUAL mode. Refer to Section 14.2.5 - SPEED
REFERENCE SELECTION.

FLWR PR FOLLOWER PRESENT - The relay energizes when the

analog input reference signal at TB-5B is greater than 2
mA, and de-energizes if the signal falls below 2 mA.

MIN/MAX MIN/MAX ALARM - The relay de-energizes when the

feedback signal (in PID mode) or the speed reference
signal (in open-loop speed mode) is within the limits set
by MIN ALRM and MAX ALRM (Parameters 81 and 82),
and energizes when the signal falls below the MIN ALRM
setting or exceeds the MAX ALRM setting.

/ MIN/MAX INVERSE MIN/MAX ALARM - The relay energizes when

the feedback signal (in PID mode) or the speed reference
signal (in open-loop speed mode) is within the limits set by
MIN ALRM and MAX ALRM (Parameters 81 and 82), and
de-energizes when the signal falls below the MIN ALRM

setting or exceeds the MAX ALRM setting.

MIN ALR MIN ALARM - The relay de-energizes when the feedback

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signal (in PID mode) or the speed reference signal (in
open-loop speed mode) equals or exceeds the MIN ALRM
setting (Parameter 81), and energizes when the signal falls
below the MIN ALRM setting.

/ MIN ALR INVERSE MIN ALARM - The relay energizes when the

feedback signal (in PID mode) or the speed reference
signal (in open-loop speed mode) equals or exceeds the
MIN ALRM setting (Parameter 81), and de-energizes when
the signal falls below the MIN ALRM setting.

MAX ALR MAX ALARM - The relay de-energizes when the feedback

signal (in PID mode) or the speed reference signal (in
open-loop speed mode) is less than or equal to the MAX
ALRM setting (Parameter 82), and energizes when the
signal exceeds the MAX ALRM setting.

/ MAX ALR INVERSE MAX ALARM - The relay energizes when the

feedback signal (in PID mode) or the speed reference
signal (in open-loop speed mode) is less than or equal to
the MAX ALRM setting (Parameter 82), and de-energizes
when the signal exceeds the MAX ALRM setting.

REVERSE The relay energizes when Reverse direction is selected,

and de-energizes when Forward direction is selected.

The open-collector output circuit is a current-sinking type rated at 30 VDC and 40
mA maximum. An external power supply (30 VDC max.) must be used to power the
open-collector outputs. The drive does not have a power supply.

53 TB15 OUT (TB-15 OPEN COLLECTOR OUTPUT)

This parameter sets the open-collector output indication for terminal TB-15. It has
the same functionality as Parameter 52 - TB14 OUT above.

54 RELAY (RELAY FUNCTION)

The control board has one set of FORM C relay contacts that can be programmed
for the same indications as the open-collector outputs described above.

The FORM C relay contacts on TB-16, 17, and 18 are rated 2 Amps at 28 VDC or 120
Vac. Control wiring diagrams show relays in the rest state (coils NOT energized).

55 TB5B LOSS (LOSS OF FOLLOWER ACTION)

This parameter selects the action taken by the drive if the follower signal is lost at
TB-5B. This function is only active if the follower signal is 4-20 mA. The signal is
considered lost if it falls below 2 mA.

NONE The drive will go to the programmed minimum speed.

FAULT The drive will trip into a FOLLOWER fault condition.

SP #4 The drive will go to SPEED #4 (Parameter 4).

57 SERIAL (SERIAL COMMUNICATIONS)

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This parameter is used to activate serial communications. When using this feature,
the drive can communicate with a personal computer (PC), programmable logic
controller (PLC), or other external device that utilizes RS-485 serial communications
for control. The serial interface may be used to read present parameter settings
(uploading to the control device), write new parameter settings (downloading from
the control device), monitor present drive activity, and control drive activity. The
following settings are available:

DISABLE Serial communication function is disabled.

W / TIMER Enables serial communications with a watchdog timer. If

there is no serial activity (read or write) for more than 10
seconds, serial control will turn off and the drive will stop.

W / O TIMR Enables serial communications

without a watchdog timer.
However, after 10 seconds of no serial activity, serial control
can be turned off by issuing a STOP command from any
source (keypad, terminal strip) other than the serial link.

NOTE

1: The keypad STOP button and remote STOP input (TB-1) are always

active, regardless of what method (LOCAL, REMOTE, or SERIAL) is being used
to control the drive.

NOTE 2: If a RESET command (Parameter 65 - PROGRAM) is issued through
the serial link, this parameter will not default back to DISABLE. However, explicitly
setting this parameter to DISABLE through the serial link will cut off communication
with the drive.

If developing an application for serial communications, refer to the RS-232/RS-485
Modbus or Metasys Communications Protocol Specification.

58 A

DDRESS (SERIAL ADDRESS)

This parameter is used with the serial communications feature, and is intended for
use in a multiple drive network (RS-485). The serial link will support drives with

addresses from 1 up to 255 (Metasys) or 247 (Modbus).

61 PASSWORD (PASSWORD NUMBER)

This feature limits access to the programmable parameters for added security. The
correct password must be entered in order to change the parameters.

Pressing the PROG/RUN button on the keypad will activate the PASSWORD
prompt. If the correct password is entered, the PROGRAM MODE is entered and
parameters can be changed.

If the wrong password is entered, the display will flash ERROR: INCORRECT and
then return to the PASSWORD prompt to allow another attempt at entering the
correct password.

If the ENTER key is pressed while PASSWORD reads 0000, the MONITOR MODE
will be entered (if Parameter 64 - MONITOR, is set to ON), which will allow the

parameters to be viewed (except for PASSWORD), but not changed.

NOTE 1: The factory default value is 0019.

NOTE 2: If PASSWORD is set to 0000, the function is disabled. Pressing the

PROG/RUN key will result in direct entry into the PROGRAM mode without having
to enter a password.

63 SOFTWARE (SOFTWARE VERSION)

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This parameter displays the software code and revision number of the control board
software. This information is useful when contacting the factory for programming
or troubleshooting assistance. This is a “view-only” parameter, and cannot be
changed.

64 MONITOR (MONITOR)

This parameter is used to enable (ON) or disable (OFF) the MONITOR MODE
function. The functionality is explained below:

ON Pressing the PROG/RUN key will activate the PASSWORD

OFF Pres

65 PROGRAM (PROGRAM FACTORY DEFAULTS)

prompt. If the ENTER key is pressed while the password
value reads 0000, the MONITOR MODE is entered and
parameters can be viewed (except for PASSWORD), but
not changed.

sing the PROG/RUN key will activate the PASSWORD
prompt. If the ENTER key is pressed while the password
value reads 0000, it will be treated as in incorrect password
and the display will flash ERROR: INCORRECT, and then
return to the PASSWORD prompt to allow another attempt
at entering the correct password.

EXTERNAL FAULT (TB-13D) circuitry
to factory defaults! The drive must be reprogrammed after a RESET in order to
insure proper operation.

FAILURE TO DO SO MAY RESULT IN DAMAGE TO EQUIPMENT AND/OR
INJURY TO PERSONNEL!

This parameter is used to reset the programmable parameters back to the factory
default settings. This parameter has three possible settings:

MAINTAIN Maintain parameter settings as they are.

RESET 60 Resets parameters to factory defaults for 60 Hz base

frequency.

RESET 50 Resets parameters to factory defaults for 50 Hz base

frequency.

NOTE 1: This parameter will display RESET 60 or RESET 50 until a change is
made to one or more of the parameter settings. Once a parameter is changed, the
display will change to MAINTAIN.

NOTE 2: When a reset is performed, TB-13D will default to a normally open
EXTERNAL FAULT contact because Parameter 50 - TB13D will be reset to EXT

FAULT.

66 HISTORY (CLEAR FAULT HISTORY)

This parameter is used to clear the previous faults in the FAULT HISTORY. When set
to CLEAR and the ENTER key is pushed, the display will change to MAINTAIN, and
the FAULT HISTORY will display NO FAULT for each of the eight fault histories.

WARNING!

may be disabled if parameters are reset

63

70 PID MODE (PID MODE SELECT)

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This parameter activates the PID function, and selects whether the PID control
will be direct or reverse acting. Refer to Section 19.0 - MC3000 PID SETPOINT
CONTROL. The following options are available:

OFF Disables the PID function to allow “standard” drive

NORMAL Enables the PID function for direct acting systems. An

REVERSE Enables the PID function

NOTE

: The REVERSE selection is not used to compensate for reverse acting

feedback devices. If a reverse acting feedback device is used, program Parameters
75 and 76 - FB @ MIN and FB @ MAX as described in Section 19.1 - FEEDBACK
DEVICES.

When PID is enabled, and the drive is in REMOTE and AUTO mode, the drive will
operate in a CLOSED LOOP fashion, responding to the feedback signal in order
to maintain the process setpoint. In this case, the setpoint reference can be a 0­10 VDC or 4-20 mA signal, or the keypad. The SPEED REFERENCE SOURCE
indication in the CONTROL display will indicate VDC (0-10 VDC), IDC (4-20 mA),
or AKB (keypad), depending on the setpoint reference.

When PID is enabled, and the drive is in LOCAL and AUTO mode, the drive will
also operate in a CLOSED LOOP fashion. However, in this case, the only setpoint
reference available is the keypad, and the SPEED REFERENCE SOURCE indication
in the CONTROL display will indicate AKB.

When PID is enabled, and the drive is in MANUAL and LOCAL or REMOTE mode,
the drive will operate in an OPEN LOOP fashion, responding directly to speed
commands from the keypad only. The SPEED REFERENCE SOURCE indication
in the CONTROL display will indicate MKB.

When PID is disabled, the drive will operate in an OPEN LOOP mode, responding
directly to speed commands from either the keypad (MANUAL mode) or an analog
input signal (AUTO mode).

74 PID FB (PID FEEDBACK SOURCE)

This parameter selects the terminal to be used for the feedback signal, and can be
set to TB-5A or TB-5B. TB-5A is used for 0-10 VDC signals, and TB-5B is used
for 4-20 mA signals.

NOTE: The MC3000 has only one analog input of each type, so the same type of
signal cannot be used for feedback and setpoint reference. For example, a 4-20
mA signal from a transducer could not be used as a feedback signal if the setpoint
is being controlled by a 4-20 mA signal from a PLC.

75 FB @ MIN (MINIMUM FEEDBACK VALUE)

This parameter should be set to the value of the process variable that corresponds
to the minimum transducer feedback signal (0 VDC or 4 mA).

operation.

increase in the feedback variable will cause a decrease in
motor speed.

for reverse acting systems. An
increase in the feedback variable will cause an increase in
motor speed.

64

76 FB @ MAX (MAXIMUM FEEDBACK VALUE)

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This parameter should be set to the value of the process variable that corresponds
to the maximum transducer feedback signal (10 VDC or 20 mA).

NOTE: If a reverse acting feedback device is being used, FB @ MIN should be
set to the maximum process variable value, and FB @ MAX should be set to the

minimum process variable value.

77 P GAIN (PROPORTIONAL GAIN)

This parameter setting represents the speed command output (in % of maximum
speed) that results from each 1% of error (1% of Parameter 75 - FB @ MIN or 76

- FB @ MAX, whichever is larger).

Example: If P GAIN is programmed for 5%, and the error (difference between
setpoint and feedback) is 10%, the speed command output of the Proportional term
is 50% (10 x 5 = 50) of maximum speed.

78 I GAIN (INTEGRAL GAIN)

This parameter setting represents the ramp rate of the speed command output (in
% of maximum speed per second) that results from each 1% of error.

Example: If I GAIN is programmed for 0.5 seconds, and the error is 5%, the rate
of rise of the speed command output of the Integral term is 2.5% (0.5 x 5 = 2.5) of
maximum speed per second.

79 D GAIN (DIFFERENTIAL GAIN)

This parameter setting represents the speed command output (in % of maximum
speed) that results from each 1% per second change in the error.

Example: If D GAIN is programmed for 5 seconds, and the error is increasing at
2% per second, the speed command output of the Differential term is 10% (5 x 2
= 10) of maximum speed.

NOTE: Differential gain is used as a “shock-absorber” to dampen overshoots in
fast-acting systems. However, it can be very sensitive to “noise” on the feedback
signal and to digitizing errors, so it must be used with caution.

80 PID ACC (PID ACCEL/DECEL)

This parameter sets the acceleration and deceleration rate of the setpoint reference
into the PID unit. When the setpoint changes, this function will “filter” the input to the
PID unit by ramping the setpoint reference from the previous value to the new value.
This will help prevent overshoots that can occur when the PID control attempts to
respond to step changes in setpoint, resulting in smoother operation. If PID ACC
is set to 0.0 seconds, it is effectively disabled.

81 MIN ALRM (PID MINIMUM ALARM)

This parameter setting represents the value that the feedback signal (in PID mode)
or speed reference signal (in open-loop speed mode) must fall below to activate the
MIN/MAX ALARM output (see Parameters 52, 53, and 54).

65

82 MAX ALRM (PID MAXIMUM ALARM)

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This parameter setting represents the value that the feedback signal (in PID mode)
or speed reference signal (in open-loop speed mode) must exceed to activate the
MIN/MAX ALARM output (see Parameters 52, 53, and 54).

NOTE 1: The MIN ALARM function can be used to start and stop the drive based
on the level of the speed reference signal or PID feedback signal. This is done by
wiring a 2-wire start/stop circuit through the drive's Form C relay or open-collector
output, and setting the Form C relay or open-collector output for MIN/MAX (see
Parameters 52, 53, and 54). When the signal drops below the MIN ALARM setting,
the relay or open-collector output will de-energize, which opens the start contact and
stops the drive. When the signal is equal to or greater than the MIN ALARM setting,
the relay or open-collector output will energize, which closes the start contact and
starts the drive. The drive must be in REMOTE mode to use the MIN/MAX function
to start and stop the drive.

NOTE 2: When using the MIN and MAX ALARM functions in open-loop speed
mode (PID is disabled), parameter 74 - PID FB must still be set to match the speed
reference signal being used.

98 LANGUAGE (LANGUAGE SELECTION)

The MC Series drive can support other languages with the addition of an optional
LANGUAGE EEPROM chip installed in socket U11 on the control board of the
drive. If the EEPROM is not present, the default language will be ENGLISH. Also,
this parameter is not affected when the parameters are reset using Parameter 65

- PROGRAM. Therefore, if a language other than ENGLISH is selected, it will
remain in effect after a RESET.

99 FAULT HISTORY

The FAULT HISTORY stores the previous eight fault conditions that caused the drive
to trip. The information stored here is view-only, it cannot be altered. The FAULT
HISTORY can be used to determine if there is a pattern, or trend, to the faults, which
may indicate a problem in the system. Refer to Section 20.0 - TROUBLESHOOTING
for more information on faults.

The FAULT HISTORY indicates the number of the fault (number 1 is the most
recent fault), the fault message, and the status of the drive at the time of the fault.
An example is shown below:

FAULT

NUMBER

FAULT

MESSAGE

DRIVE

STATUS

3 OVERLOAD RUN

In the example above, the third fault log is being viewed, which is an OVERLOAD
fault that occurred while the drive was in a RUN state.

66

19.0 MC3000 PID SETPOINT CONTROL

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PID Setpoint Control allows the MC3000 to maintain a process setpoint, such as PSI
or CFM, without using an external controller. When PID is activated, the MC3000
will operate in a closed-loop fashion, automatically adjusting the motor speed to
maintain the setpoint.

PID setpoint control requires feedback from the process in order to compare the
process variable “value” to the setpoint. The difference between the process variable
“value” and the setpoint is called the error. The MC3000 will increase or decrease
the motor speed in an attempt to minimize the error. By constantly adjusting the
motor speed, the PID control will drive the process toward the setpoint. Refer to
the PID block diagram below:

P

SETPOINT

Error

I

Speed

Command

D

Process Variable

Feedback (transducer)

19.1 FEEDBACK DEVICES

A transducer or transmitter is required to monitor the process variable and provide
feedback to the PID unit in order to compare the process variable feedback to
the setpoint. A transducer outputs a signal corresponding to a fixed range of the
process variable. A transmitter provides offset and gain adjustments to allow the
output signal to be adjusted to correspond to different ranges of the process variable.
Typical output signals for transducers and transmitters are: 0-5 VDC, 0-10 VDC,
or 4-20 mA. The feedback device must be externally powered, as the drive does
not have a power supply for such devices. Program Parameter 74 - PID FB (PID
FEEDBACK SOURCE) for the appropriate terminal (TB-5A or TB-5B), and connect
the feedback device as described below:

POT The positive signal wire (wiper) is connected to TB-5A, and

0-5, 0-10 VDC Connect the positive signal wire to TB-5A.

4-20 mA Connect the positive signal wire to TB-5B.

The common, or negative signal wire, is connected to TB-2 (circuit common).

Feedback devices can be direct or reverse acting. A direct acting device outputs
a signal that increases as the process variable increases. A reverse acting device
outputs a signal that decreases as the process variable increases. The programming
of Parameters 75 - FB @ MIN and 76 - FB @ MAX depend on the type of feedback
device being used.

When using a direct acting transducer, Parameter 75 - FB @ MIN should be set to
the value of the process variable feedback corresponding to the minimum feedback
signal (0 VDC or 4 mA), and Parameter 76 - FB @ MAX should be set to the value
of the process variable feedback corresponding to the maximum feedback signal
(5 or 10 VDC, or 20 mA).

the “high” lead is connected to TB-6.

Motor

Process

67

Example 1: A 0-100 psi transducer outputs a 4 mA signal at 0 psi and 20 mA at

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100 psi. Program Parameter 75 to 0.0 PSI, and Parameter 76 to 100.0 PSI (This
assumes that Parameter 31 - UNITS is set to pid PSI, and Parameter 33 - UNITS
DP is set to XXX.X).

For a reverse acting transducer, set Parameter 75 - FB @ MIN to the maximum
process variable feedback value, and set Parameter 76 - FB @ MAX to the minimum
process variable feedback value. In other words, Parameter 75 is set higher than
Parameter 76. See the example below:

Example 2: A 0-100 psi transducer outputs a 20 mA signal at 0 psi and 4 mA at
100 psi. Program Parameter 75 to 100.0 PSI, and Parameter 76 to 0.0 PSI (This
assumes that Parameter 31 - UNITS is set to pid PSI, and Parameter 33 - UNITS
DP is set to XXX.X).

19.2 THE SYSTEM - DIRECT AND REVERSE ACTING

The entire system can also be direct or reverse acting. In a direct acting system,
an increase in motor speed causes an increase in the process variable. This is
equivalent to requiring an increase in motor speed in response to a decreasing
process variable feedback.

In a reverse acting system, an increase in motor speed causes a decrease in the
process variable. This is equivalent to requiring an increase in motor speed in
response to an increasing process variable feedback. Examples of direct and
reverse acting systems are described in the next section.

19.3 PID CONTROL - DIRECT AND REVERSE ACTING

The PID Setpoint Control software can be direct or reverse acting, and must be set
to match the system. This is accomplished with Parameter 70 - PID MODE. When
set to NORMAL (for direct acting systems), the PID unit will command an increase
in motor speed if the process variable feedback decreases, and a decrease in
motor speed if the process variable feedback increases. When set to REVERSE
(for reverse acting systems), the opposite is true.

NOTE: The REVERSE setting for Parameter 70 - PID MODE is not used to
compensate for reverse acting feedback devices. If a reverse acting feedback device
is used, program Parameters 75 and 76 as described above.

An example of a direct acting system is one that maintains duct pressure. Duct
pressure is the process variable that is monitored by the feedback device. As duct
pressure rises, motor speed needs to be decreased to maintain the pressure. A
direct acting PID control will command a decrease in motor speed in response to
an increasing process variable feedback.

An example of a reverse acting system is one that maintains water temperature in
a cooling tower. Water temperature is the process variable that is monitored by the
feedback device. As the water temperature rises, motor speed needs to be increased
to lower the temperature of the water. A reverse acting PID control will command an
increase in motor speed in response to an increasing process variable feedback.

19.4 SETPOINT REFERENCE SOURCES

The setpoint reference input can be one of the following:

1. Keypad

2. 4-20 mA signal at TB-5B

3. 0-10 VDC signal at TB-5A

4. Potentiometer signal at TB-5A

In order to use TB-5A or TB-5B for a setpoint input, one of the TB-13 terminals must

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be programmed for the appropriate signal. Closing the TB-13 terminal to TB-2 will
then select that signal as the setpoint reference. If the contact closure is not made
to TB-2, the setpoint reference source will default to the keypad. See Parameters
47 - TB13A, 48 - TB13B, and 49 - TB13C.

Remote setpoint reference inputs at TB-5A and TB-5B can only be used if that
terminal is NOT being used for the process feedback signal from a transducer. The
MC3000 has only one analog input of each type, so the same type of signal cannot
be used for transducer feedback and setpoint reference. For example, a 4-20 mA
signal from a transducer could not be used as a feedback signal if the setpoint is
being controlled by a 4-20 mA signal from a PLC.

19.5 TUNING THE PID CONTROL

Once the PID control is set up correctly, it needs to be tuned in order to maintain the
process setpoint. First, set the Integral and Differential Gains to zero, and increase
the Proportional Gain (Parameter 77) until the system becomes unstable, then lower
the gain until the system stabilizes again. Set the Proportional Gain about 15% less
than that value that stabilizes the system. If only Proportional Gain is used, and
the system is operating in a steady-state condition (setpoint is fixed and process
variable has settled to a fixed value), there will always be a certain amount of error
in the system. This is called the steady-state error.

Integral Gain (Parameter 78) is used to force the steady-state error to zero by
increasing the output speed command with respect to time. Over time, the error
will be forced to zero because the Integral term will continue to change the speed
command, even after the Proportional term reaches steady state and no longer
affects the speed command. The Integral Gain affects the rate of rise of the output
speed command from the Integral term. Small amounts of Integral Gain can cause
large changes in PID performance, so care must be taken when adjusting Integral
Gain. Too much Integral Gain will result in overshoots, especially if large step
changes in error occur.

Typically, Proportional and Integral Gain are all that is needed to fine-tune the
system. However, it may be necessary to use Differential Gain (Parameter 79) to
further stabilize the system, especially when quick responses are required. The
Differential term responds to the rate of change of the error, not the actual error
itself. Differential Gain acts like a “shock-absorber” to dampen overshoots that can
occur when the PID tries to react quickly to changes in error or setpoint. This allows
fast PID response, with reduced risk of becoming unstable due to overshoots. The
Differential term is very sensitive to electrical noise on the feedback signal and to
digitizing errors, so it must be used with caution.

The other parameter setting that affects the response of the PID control is Parameter
80 - PID ACC. This sets the acceleration (and deceleration) rate of the setpoint
reference into the PID unit. When the setpoint changes, this function will “filter” the
input to the PID unit by ramping the setpoint reference from the previous value to the
new value. This will help prevent overshoots that can occur when the PID control
attempts to respond to step changes in setpoint, resulting in smoother operation. If
PID ACC is set to 0.0 seconds, it is effectively disabled.

19.6 MC3000 DISPLAY IN PID MODE

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When the drive is in PID mode, the DRIVE STATUS portion of the display will
indicate actual output frequency (in Hertz) instead of RUN, and the right side of the
display will indicate PID SETPOINT, % LOAD, or PID FEEDBACK. The ENTER
key is used to toggle between the different displays. Examples of the possible
displays are shown below:

DRIVE

STATUS

PID

SETPOINT

42.53 HZ 35.0 PSI

PID

UNITS

DRIVE

STATUS

PERCENT

LOAD

42.53 HZ 57% LOAD

DRIVE

STATUS

PID

FEEDBACK

42.53 HZ 33.7 PSI

PID

UNITS

In the examples above, the drive is running at 42.53 Hz to maintain the PID
SETPOINT of 35.0 psi. Pressing the ENTER key displays % LOAD, which is 57%.
Pressing ENTER again displays the PID FEEDBACK from the process, which is

33.7 psi.

When the PID SETPOINT and PID FEEDBACK displays are entered, the display
will flash SETPOINT or FEEDBACK before displaying the value to indicate which
display is being viewed.

20.0 TROUBLESHOOTING

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The table below lists the fault conditions that will cause the drive to shut down, as
well as some possible causes. Please contact the factory for more information on
troubleshooting faults.

NOTE: The drive will not automatically restart after a PWR SAG or a CONTROL
fault. Also, if an OUTPUT fault occurs below 1.5 Hz, the drive will only attempt
one restart, after a four minute delay. If unsuccessful, it will then trip into FAULT
LOCKOUT, which will require a manual reset. This is done to protect the drive in
case of a shorted motor.

FAULT MESSAGES

FAULT DESCRIPTION POSSIBLE CAUSES

OUTPUT Output transistor fault: Phase to ground short.

current exceeded 200% of Phase to phase short.

rating. FX BOOST set too high.

Bad transistor module (IPM).

LO VOLTS Low DC Bus Voltage fault: DC Low line voltage.

bus voltage below 60% of

normal.

HI VOLTS High DC Bus Voltage fault: High line voltage.

bus voltage above 120% of Overhauling load.

normal. DECEL rate is set too fast.

HI TEMP Temperature fault: Internal Ambient temperature too high.

drive temperature too high. Fan failure (if equipped).

OVERLOAD Current Overload fault: Drive undersized for the

current rating exceeded for application.

long. Problem with motor and/or

equipment.

PWR TRAN Power Transient fault: Low AC line dipped or sagged.

line voltage.

FAULT MESSAGES

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FAULT DESCRIPTION POSSIBLE CAUSES

PWR SAG Power Sag fault: Control Erratic AC line.

voltage is below tolerance.

A new control board has been Perform a factory reset using

installed that is different from Parameter 65-PROGRAM.

the previous version. This will update the software

and allow the fault to be reset.

LANGUAGE Language fault: Selected Defective language EEPROM.

language not present Language EEPROM (U11)

removed after programming.

EXTERNAL External fault: TB-13D is open Check setting of Parameter 50.

or closed to TB-2, depending Check devices wired between

setting of Parameter 50 - TB13D and TB-2.

DB ERROR Dynamic Brake fault: DB The DB duty cycle is too high,

has

sensed a resistor overload. causing the resistors to

CONTROL Control Board fault: New Perform a factory reset using

software has been installed Parameter 65-PROGRAM.

that is different from the This will update the software

previous version. and allow the fault to be reset.

INTERNAL Internal fault: The micro- Electrical noise on control

INTERN (#) processor has sensed a Defective microprocessor.

FOLLOWER Loss of Follower fault: Parameter 55 - TB5B LOSS is

4-20 mA signal at TB-5B is set to FAULT.

below 2 mA.

Blank Display or The power supply has shut Check heatsink fans (if

repeatedly This can be the result of Clear any obstructions. If they

TESTING or failed heatsink fans. are not clogged, contact the AC

Tech Service Department.

21.0 USER SETTING RECORD

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PARAMETER MENU: USER SETTING RECORD

PARAM.

NUMBER

0 LINE VOLTS AUTO

1 SPEED #1 20.00 Hz

2 SPEED #2 20.00 Hz

3 SPEED #3 20.00 Hz

4 SPEED #4 20.00 Hz

5 SKIP #1 .00 Hz

6 SKIP #2 .00 Hz

7 BANDWID 1.00 Hz

8 ACCEL 30.0 SEC

9 DECEL 30.0 SEC

10 MIN FRQ .50 Hz

11 MAX FRQ 60.00 Hz

12 DC BRAKE .0 VDC

13 DC TIME .0 SEC

14 DYN BRAKE OFF

PARAMETER

NAME

FACTORY
DEFAULT

USER

SETTING

16 CURRENT 120 %

17 MOTOR OL 100%

18 BASE 60.00 Hz

19 FX BOOST (NOTE 1)

22 TORQUE CONSTANT

23 CARRIER 2.5 kHz

25 START NORMAL

26 STOP COAST

28 AUTO/MAN A / M LOC

PARAMETER MENU: USER SETTING RECORD

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PARAM.

NUMBER

30 CONTROL LOCAL

31 UNITS sp: HERTZ

32 HZ MULT 1.00

33 UNITS DP XXXXX

34 LOAD MLT 100%

35 CONTRAST MED

36 SLEEP TH .00 Hz

37 SLEEP DL 30.0 SEC

38 SLEEP BW 0 %

39 TB5 MIN .00 Hz

40 TB5 MAX 60.00 Hz

41 AIN FLTR 0.02 SEC

42 TB10A OUT NONE

43 @TB10A 60.00 Hz

44 TB10B OUT NONE

45 @TB10B 125%

47 TB13A NONE

48 TB13B NONE

49 TB13C NONE

50 TB13D EXT FAULT

52 TB14 OUT NONE

53 TB15 OUT NONE

54 RELAY NONE

55 TB5B LOSS FAULT

57 SERIAL DISABLE

58 ADDRESS 30

61 PASSWORD 0019

PARAMETER

NAME

FACTORY

DEFAULT

USER

SETTING

PARAMETER MENU: USER SETTING RECORD

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PARAM.

NUMBER

63 SOFTWARE (N/A)

64 MONITOR ON

65 PROGRAM RESET 60

66 HISTORY MAINTAIN

70 PID MODE OFF

74 PID FB TB-5A

75 FB @ MIN 0.00%

76 FB @ MAX 100.00%

77 P GAIN 5.00%

78 I GAIN 0.0 SEC

79 D GAIN 0.0 SEC

80 PID ACC 30.0 SEC

81 MIN ALRM 0.00%

82 MAX ALRM 0.00%

98 LANGUAGE ENGLISH

99 FAULT HISTORY (N/A)

PARAMETER

NAME

FACTORY
DEFAULT

USER

SETTING

EC DECLARATION OF CONFORMITY

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In accordance with EN45014:1998

Applied Council Directive(s): EMC Directive 89/336/EEC, as amended:

92/31/EEC and Low Voltage Directive 73/23/EEC, as amended: 93/68/EEC

We, Manufacturer:

AC Technology Corporation
630 Douglas Street
Uxbridge, MA 01569 U.S.A

decl

are under our sole responsibility that the products to which this
Declaration relates, are in conformity with the relevant provisions of the
following standards, provided that installations are carried out in accordance
with manufacturer’s instructions.

PRODUCTS RELATED TO DECLARATION

MC Series AC Variable Frequency Motor Drives:

M3100
M3200
M3400
M3500

RELEVANT EUROPEAN STANDARDS

EN 50081-2* Electromagnetic compatibility
– Generic emission standard – Part 2: Industrial environment

EN 50082-2* Electromagnetic compatibility
– Generic immunity standard – Part 2: Industrial environment

EN 50178:1998 Electronic equipment for use in power installations

* with suitable line filters that are properly installed.

Authorized Representative:

AC Technology Europe
Unit 4, Knights Way
Battlefield Enterprise Park
Shrewsbury SY1 3AB U.K.

YEAR OF CE Marking (Low Voltage Directive): 1999

Signature:

Jim Reinwald, Compliance Manager

Date: 20 August 1997