Boston gear Ratiotrol P-3026-BG Owner's manual

Boston Gear®
Ratiotrol®
DC Motor Speed Control
Doc. No. 60881
VEL Series 1/6 – 1 HP
VEH Series 1 – 3 HP
Installation and Op ration
P-3026-BG
An Altra Industrial Motion Company

2P-3026 • Doc. No. 60881 • Boston Gear®Ratiotrol®DC Motor Speed Control
Section
General nformation . . . . . . . . . . . . . . . . . . 3
ntroduction .........................3
General Description . . . . . . . . . . . . . . . . . . 3
Motors .............................3
ModelTypes ........................3
Controller dentification . . . . . . . . . . . . . . . . 3
Ratings ............................4
Operation Conditions . . . . . . . . . . . . . . . . . 4
Performance Characteristics . . . . . . . . . . . . 4
StandardFeatures ...................5
Adjustments.........................5
Options ............................5
Section
nstallation ..........................6
Mounting nstructions . . . . . . . . . . . . . . . . . 6
Wiring nstructions....................6
nitialStartup ........................7
Section
Operation...........................8
PowerOn/Off........................8
Run ...............................8
Stop ...............................8
SpeedControl .......................9
Reversing ..........................9
Jogging ............................9
noperative Controller . . . . . . . . . . . . . . . . . 9
Section V
Maintenance .......................10
General ...........................10
Adjustment nstructions . . . . . . . . . . . . . . . 10
Troubleshooting.....................12
Section V
PartsList ..........................15
Section V
Options ...........................16
Section V
llustrations ........................17
List of llustrations
Figure No. 1 Enclosure Dimensions
VEL/H ...........................17
Figure No.2 Enclosure Dimensions
VEH/H-MR........................18
Figure No.3 Schematic
Run/StopLogic ....................19
Figure No.4 Schematic
DB, Reversing, Jog Options . . . . . . . . . . 20
Figure No.5 nternal View,
Controller ........................21
List of Tables
Table No. 1
ApplicationData ....................4
Table No. 2
Speed Regulation Characteristics . . . . . . . 5
Table No. 4
Dynamic Braking Characteristics. . . . . . . . 8
Table No. 5
Troubleshooting....................12
Table No. 6
Parts List, Controllers . . . . . . . . . . . . . . . 15
Table No. 7
Option Combinations . . . . . . . . . . . . . . . . 16
Table of Contents
General nformation

3
P-3026 • Doc. No. 60881 • Boston Gear®Ratiotrol®DC Motor Speed Control
General nformation
Introduction
This manual contains installation, operation,
and maintenance instructions for the Boston
Ratiotrol VEL and VEH Series single-phase
Adjustable Speed Motor Controllers. A parts list
and illustrations are also included.
General Description
Ratiotrol VEL/H Controllers are general purpose
industrial units which statically rectify single-
phase AC line power to regulated DC for
adjustable speed armature control of DC
motors.
Each controller is furnished in a rugged die cast
aluminum alloy enclosure with a hinged,
gasketed door. A draw latch tightly compresses
the door gasket to exclude contaminants.
Motors
Motors may be shunt wound, stabilized shunt
wound, or permanent magnet DC types. For
maximum efficiency, the motor should be rated
for operation from a NEMA Code K power
source. See Table 1 for motor ratings.
Model Types
Controllers are available in eleven basic
models:
1. VEL16 – VEL100:
115VAC
VEL16 – 1/6 HP
VEL25 – 1/4 HP
VEL33 – 1/3 HP
VEL50 – 1/2 HP
VEL75 – 3/4 HP
VEL100 – 1 HP
2. VEH100 – VEH500:
230VAC
VEH100 – 1 HP
VEH150 – 1-1/2 HP
VEH200 – 2 HP
VEH300 – 3 HP
Basic Units
Standard VEL and VEH Controllers are basic
RUN/STOP units. Other functional features may
be incorporated by adding standardized option
kits, available from stock.
Local Control
Each controller contains an integral operator’s
control panel mounted in the enclosure cover.
This panel contains RUN and STOP
pushbuttons and a MOTOR SPEED
potentiometer. Three predrilled holes with
removable inserts are provided for an optional
JOG SPEED potentiometer, RUN/JOG toggle
switch, FWD/REV toggle switch, and other
optional operator controls.
Remote Control
The remote control station option consists of a
die-cast enclosure with installed terminal board
and blank cover. This allows the controller
operator control panel to be interchanged with
the blank cover for remote operation.
Controller Identification
Each controller contains a data label on the
inside of the enclosure cover. This label
identifies the controller, user connection
terminals and maximum wire size, controller
ratings, operation notes, and applicable options.
Section

4P-3026 • Doc. No. 60881 • Boston Gear®Ratiotrol®DC Motor Speed Control
General nformation
Ratings
1. Horsepower Range 1/6 – 3 HP
2. Power Source 1/6 – 1 HP, 115 VAC, 1-phase, 50 or 60 Hz.
1 – 5 HP, 230VAC, 1-phase, 50 or 60 Hz.
3. 115VAC Unit Output Voltages
Armature 0-90 VDC
Field 50 VDC
4. 230VAC Unit Output Voltages
Armature 0-180 VDC
Field 100 VDC
5. Service Factor 1.0
6. Duty Continuous
7. Overload Capacity (armature circuit) 150% for 1 minute
(Armature Circuit)
Note: nternal load monitor provides automatic shut-down if current exceeds
120% for 80 seconds continuously.
Table I Drive Data – Full Load
perating Conditions
1. Line Voltage Variation — ±10% of rated
2. Line Frequency Variation — ±2 Hertz of rated
3. Ambient Temperature* — 0 to 50 degrees C
(32 to 104 degrees F)
4. Altitude (standard) — 1000 meters
(3300 feet) maximum
* Temperature inside enclosure in which control is mounted
should not exceed 55 degrees C.
Performance Characteristics
1. Speed Range (controlled) – 0 to motor
base speed
2. Speed Range At Rated Torque and
Regulation – 30:1
3. Efficiency (maximum speed)
a. Controller SCR regulator – 97%
b. Complete drive (controller with motor,
typical) – 80%
4. Displacement Power Factor (maximum
speed) – 86%
5. Acceleration (standard) – By current limit
6. Speed Regulation (s Tabl 2) – Regulation
percentages are of motor base speed
under steady-state conditions.
Basic Model AC nput - 1 Phase DC Output Motor - 1750 RPM
HP Volts Amps KVA Armature Field Torque
Volts Amps Volts Amps Lb n Lb Ft
VEL16 1/6 115 3.3 0.4 90 2.2 50 2.0 6 0.50
VEL25 1/4 115 5.0 0.6 90 3.0 50 2.0 9 0.75
VEL33 1/3 115 6.0 0.7 90 3.6 50 2.0 12 1.00
VEL50 1/2 115 9.0 1.1 90 5.6 50 2.0 18 1.50
VEL75 3/4 115 13.0 1.5 90 8.1 50 2.0 27 2.25
VEL100 1 115 15.0 1.7 90 11.4 50 2.0 36 3.00
VEH100 1 230 7.2 1.7 180 5.5 100 2.0 36 3.00
VEH150 1-1/2 230 10.0 2.3 180 8.2 100 2.0 54 4.50
VEH200 2 230 15.0 3.5 180 11.6 100 2.0 72 6.00
VEH300 3 230 16.0 3.7 180 14.4 100 2.0 108 9.00
Section

5
P-3026 • Doc. No. 60881 • Boston Gear®Ratiotrol®DC Motor Speed Control
General nformation
Variable
Regulation Load Line Field Temperature
Method Change Voltage Heating (1)
95% ±10% Cold/Normal ±10ºC
Standard Voltage
Feedback with R
Compensation
2-3% 2% 5-12% 1%
Optional Speed
(tach) Feedback 0.5% 0.5% 0.5% 0.5%
Standard Features
1. Power Conversion --– NEMA Code K
semiconverter power bridge consisting of two
SCR’s, two diodes and a freewheeling diode.
Power bridge is an integrated, encapsulated
component. (S Figur 5, pag 21)
2. Reference Power Supply – +10 VDC
regulated, with respect to common.
3. Feedback – CEMF voltage with adjustable R
compensation.
4. Control Transformer – 24 VAC secondary
isolates all operator controls and magnetic
control logic from the AC power source for
operator protection. (S Transform r T1,
Figur 5, pag 21)
5. Motor Contactor – Provides positive
disconnection of motor armature from the
controller output, and undervoltage
protection. A phase-off circuit ensures that
the contactor does not make or break DC.
(S Figur 5, pag 21)
6. Motor Overload – Positive motor protection
by an electronic nonadjustable current (load)
monitor. This circuit shuts down the drive
when the motor armature current exceeds
120% for 80 seconds. An optional current
(load) monitor (Option Kit Cat. No. 60177) is
available which provides an adjustable trip
range and an adjustable time delay range.
This option provides a relay with one set of
Form C, 2 ampere (120 VAC – 28 UDC)
contacts which can be used to signal audible
or visual alarms, or auxiliary control devices,
e.g., lubrication pumps, fans, valves.
7. AC Line Disconnect – Provided by a single-
pole, magnetic-trip only circuit breaker with a
5000 ampere interruption capacity. (S
Figur 5) An optional two-pole circuit breaker
(Option 30, Kit Cat. No. 60169) is available
which opens both lines of the input supply.
8. Line Transient Protection – Provided by a
metal oxide varistor (MOV) suppressor
across the AC input line. (S RV1 on Figur
5)
9. UL Listed – File E60208
Adjustments
The following adjustment potentiometers are
located on the standard circuit boards in the
controller. (S Figur 5)
1. Maximum Speed – 60 to 100% of motor base
speed
2. Minimum Speed – 0 to 30% of motor
base speed
3. R (load) Compensation – 0 to 100% of
rated load
4. Current Limit – 50 to 150% of full-load torque
ptions
Standardized pre-engineered optional
equipment can be supplied with Controllers at
additional costs. S S ction VI for option
listing.
Section
Table 2 – Speed Regulation Characteristics
(1)Do s Not Apply to P rman nt Magn t Motors.