Page 1
2120/2130
SINGLE-PHASE DC SERIES
HORSEPOWER RANGE (5) MODEL FUNCTION
115V 230V
NUMBER (3)
1/12-1/2 — 2121 Run-Stop
1/12-1/2 1/2-1
2122 Run-Stop
1/12-1
(2)
1/2-2
(2)
1/12-1 1/2-3 2123 Run-Stop
■ 1/12 - 3 HP
■ 115 or 230 V, Single Phase
■ Tach Feedback
■ Reversing Models
■ Current Limit
■ Compact “Micro Drives”
■ Budget Priced
■ Flexible — Modifiable with Standard
Options
■ NEMA 1 or NEMA 12 Enclosed
Models
■ Open Chassis Models
■ Local and Remote Control Models
■ UL Listed or UL Recognized
2120/2130-1
1/12 through 3 HP
Adjustable Speed
DC Motor Controllers
NOTES: (1) Model 2120 Units are furnished with a potentiometer rated 5K
ohms, 1/2 watt for separate mounting.
(2) Requires either option 1761 for 1 HP on 115 VAC and 2 HPon
230 VAC or option 1760 for 3/4 HPon 115 VAC and 1-1/2 HP on
230 VAC.
(3) Armature contactor Run-Stop-DB, and contactor reversing and
dynamic braking are provided by Options 1001E and 1004E.
(4) Panel assembly models do not include an enclosure. They are
intended for mounting on a door or other panel surface through
an aperture cut into the User’s NEMA 1 or NEMA 12 enclosure.
(5) Units may be easily recalibrated for any standard rating within
the range of the product using trimpots.
TABLE 1: MODEL 2120 OPEN CHASSIS UNITS WITHOUT
OPERATOR CONTROLS (1) TABLE 2: ENCLOSED UNITS AND PANEL MOUNT (4)
HORSEPOWER RANGE (5) MODEL
TYPE FUNCTION
115V 230V
NUMBER
1/12-1/2 1/2-1 2131P1 NEMA 1 (4) Run-Stop
Panel Assembly
1/12-1/2 1/2-1 2131P1E NEMA 1 Run-Stop
Enclosed
1/12-1/2 1/2-1 2132P1E NEMA 12 Run-Stop
Enclosed
1/12-1/2 1/2-1 2131P2 NEMA 1 (4) Run-Stop-
Panel Assembly Reverse
1/12-1/2 1/2-1 2131P2E NEMA 1 Run-Stop-
Enclosed Reverse
1/12-1/2 1/2-1 2132P2E NEMA 12 Run-Stop-
Enclosed Reverse
FIGURE 1.
Page 2
2120/2130
SINGLE-PHASE DC SERIES
2120/2130-2
DESIGN FEATURES AND FUNCTIONS
1. Enclosed Models — These units are furnished in a compact,
die cast aluminum, nonventilated enclosure. NEMA 1 and NEMA
12 models are offered. See Figure 3 for NEMA1 and Figure 4 for
NEMA 12 model dimensions. The complete control assembly is
mounted on the front panel which can be removed from the
enclosure by removing screws. The unenclosed panel assembly
can be mounted through a cut-out in the user’s enclosure, see
Figure 5 for cut-out dimensions.
2. Chassis Models — The units are furnished as a very compact
open chassis consisting of the regulator/power conversion circuit
board mounted to a formed aluminum chassis. Some models may
be furnished with supplemental heatsink (Options 1760, 1761) to
improve heat dissipation and thereby extend the horsepower
range. Chassis units are dimensionally interchangeable with many
competitive units. See Figure 1 for dimensions of Models 2121
and 2122. See Figure 2 for dimensions of Model 2123.
3. Full-Wave Power Conversion — NEMA Code K converter
configuration formed of discrete devices rated 600 PIV.
Converter consists of two (2) SCR’s, two diodes and a free
wheeling diode which provide optimum form factor for best motor
performance and long service. Enclosed models use the control
enclosure as an integral heatsink with the power control devices
electrically isolated from the enclosure.
4. Voltage Transient Protection — Metal oxide suppressor across
the AC line minimizes the effect of high voltage spikes from the
AC power source.
5. Tachometer Feedback — All standard units except Model 2121
include a connection to accept a 35, 50 or 100 VDC/1000 RPM
feedback signal from a motor mounted DC tachometer generator
for improved speed regulation as shown in Table 4
(Unidirectional units only).
6. Horsepower Selection — Easily calibrated by built-in trimpots
to suit individual motor horsepower ratings without special
instruments, or plug-in shunts.
7. Wiring Terminals — Enclosed models are provided with barrier
terminal strips for all external power and signal wires. Chassis
models are provided with male tab wiring connectors. A terminal
strip is offered as Options 1730Aand 1730B.
8. AC Line Fuse — Enclosed models include a fuse holder for an
AC line fuse mounted on the circuit board. Chassis units do not
include a fuse as standard, but a fuse holder may be provided
with Options 1719, 1730A or 1730B.
9. Operator Controls — All enclosed models include integral
operator controls consisting of a speed setting potentiometer and
an ON-OFF AC line power switch. Switch is maintained in ON
and OFF positions. Reversing models additionally include a 3position FORWARD-STOP-REVERSE maintained switch.
Switch includes a no pass through center detent which provides
anti-plug protection.
Chassis units are controlled by external, customer furnished
switches, pushbuttons, or control logic. Includes an inhibit circuit
for automatic operation by switch, relay or PLC.
10. Line Voltage Selection — Line voltage selection is automatic
without the use of jumpers or switches.
11. Field Supply — A full-wave, transient protected motor field
supply is provided.
OPERATING CONDITIONS
1. Line Voltage Variation........................................... ±10% of rated
2. Line Frequency Variation.................................................. ±2 Hz
3. Ambient Temperature
Open Chassis Models.................................................. 0 to 50°C
(32°F to 104°F)
Enclosed Models.......................................................... 0 to 40°C
(32°F to 104°F)
4. Altitude (Standard)........................................................ 3300 feet
(1000 meters) maximum
RATINGS
1. Service Factor.......................................................................... 1.0
2. Duty.............................................................................. Continuous
3. Overload Capacity (armature circuit) (2) ........ 150% for 1 minute
4. Operating Voltages.................................................... See Table 3
5. Run Speed Potentiometer.................................... 5k ohms, 1/2W
6. Horsepower Range .............................................. See Tables 1, 2
7. Reference Power Supply (1)............................................. 10VDC
8. Line Fuse (2).................................................... Provided by others
NOTES:
(1) Units are optionally adapt-
able for use with 4-20 mA,
and 0-10 VDC.
(2) A line fuse holder is pro-
vided as standard on
2131 and 2132 Models.
Fuse clips are optional on
all other models.
PERFORMANCE CHARACTERISTICS
1. Controlled speed range – Zero to motor base speed. Speed
range with respect to the specified regulation is as listed in Table
4. See Catalog Section E for continuous duty application
limitations of DC Motors.
2. Speed Regulation – (See Table 4) - Regulation percentages
listed are of motor base speed under steady-state conditions.
Normal operation will result in performance equal to or better
than specified.
3. Efficiency (Rated Speed/Rated Load)
(a) Controller SCR regulator .................................................. 99%
(b) Complete drive with motor (typical) .................................. 85%
(1) Unidirectional models only.
ADJUSTMENTS
1. Current Limit .............................. 0-150% full-load torque (typical)
2. Maximum Speed ........................... 60-100% of motor base speed
3. Minimum Speed................................ 0-40% of motor base speed
4. IR (load) Compensation.............................. 0-100% of rated load
5. Acceleration/Deceleration (1)................................... 0-4 seconds
NOTES:
(1) Model 2121 Acceleration/Deceleration is 1.0 seconds fixed rate.
TABLE 3. OPERATING VOLTAGES
POWER SOURCE OUTPUT VDC
(Single-Phase) Armature Field
115V, 50 or 60Hz 0-90 100
230V, 50 or 60 Hz 0-180 200
TABLE 4. SPEED REGULATION CHARACTERISTICS
REGULATION
Load Line Field
Speed
METHOD
Change Voltage Heating Temperature
Range
95% ±10% Cold/Normal ±10°C
Standard
Voltage
Feedback 2% ±1% 5-12% ±2% 30:1
with IR
Compensation
Optional Speed
(Tach) 1% ±1% 0.2% ±2% 100:1
Feedback (1)
Page 3
2120/2130
SINGLE-PHASE DC SERIES
TABLE 5. TYPICALAPPLICATION DATA
COMPONENT RATINGS
RATED HORSEPOWER (HP) 1/12 1/6 1/4 1/3 1/2 3/4 1 1-1/2 2 3
RATED KILOWATTS (kW) 0.062 0.124 0.187 0.249 0.373 0.560 0.746 1.129 1.492 2.238
1-PHASE 115V
2.0 3.9 5.0 6.0 8.7 12.4 15.0 – – –
AC Line Unit
INPUT Amps 230V
––––4.8 5.9 8.8 12.6 15.8 24.0
(FULL-LOAD) Unit
KVA .30 .48 .58 .71 1.0 1.4 2.0 3.0 4.0 6.0
Motor
90V .9 2.0 2.8 3.5 5.4 8.1 10.5 – – –
Armature
DC Amps
180V – – – – 2.7 3.8 5.5 8.2 11.6 16.0
OUTPUT
Motor 100V 1.0 1.0 1.0 1.0 1.0 1.0 1.0 – – –
(FULL-LOAD)
Field
200V – – – – 1.0 1.0 1.0 1.0 1.0 1.0
Amps
Full-Load Torque
(Lb-ft) with 1750 RPM .25 0.5 0.75 1.0 1.5 2.2 3.0 4.5 6.0 9.0
Base Speed Motors
2120/2130-3
RATINGS & CHARACTERISTICS
3.75 (95)
4.25 (108)
.188 (5) TYP.
.312 (8)
1.31 (33)
.25 (6)
.456
(12)
.75
(19)
1.75
(45)
3.55
(90)
FIGURE 1. Models 2121 and 2122
Dimensions
.69
1.625
.75
.62
.19 DIA MOUNTING HOLES
2 PLACES ON BACK
3.00
3.00
9.00
7.500
2.06
1.12 DIA.
ONE END
FIGURE 3. Model 2130 NEMA 1
Dimensions
.62
.19 DIA HOLES
3 PLACES
3.12
3.00
9.00
1.875
.56
10.25
9.500
1.50
.12
.75 TYP
1.12 DIA.
ONE END
2.06
FIGURE 4. Model 2130 NEMA 12
Dimensions
OUTLINE OF
FRONT PANEL
.125 x 45
4 PLACES
PANEL
CUTOUT
2.375
2.72
6-32 TAP
4 PLACES
8.375
8.72
FIGURE 5. Model 2130 Panel Mounting
Cut-Out Dimensions
7.00 (178)
1.87
(48)
.188 (5)
TYP.
5.25
(133)
.25 (6)
6.00 (152)
.50
(13)
.50(13)
5.75
(146)
1.12 (28)
.50 (13)
FIGURE 2. Model 2123 Dimensions
Page 4
2120/2130
SINGLE-PHASE DC SERIES
2120/2130-4
Option
Number Description
1001E Contactor, Two-Pole with Dynamic Braking
The basic Series 2120 chassis controller is designed for Run-Stop unidirectional operation without an armature contactor. This option provides
a two-pole armature contactor which is necessary whenever the application requires a positive disconnection of the rectified armature power
source from the motor on a stop command. Action of the contactor is sequenced with the SCR regulator to ensure that the DC power circuit is
“phased-off” before the contactor is opened. This results in “Dry switching” for improved contactor longevity. This option also includes
dynamic braking which provides exponential rate braking of the DC motor armature. Included is a DB resistor with an anti-plug circuit to
prevent restarting the controller until the braking cycle is complete, thereby preventing a potentially damaging electrical surge and mechanical
stress.
This option permits motor Start/Stop operation by pushbuttons or external logic in 115 or 230 VAC applications.
The DB resistor is rated for stopping a typical load, when the external machine inertia does not exceed that of the motor armature, as shown in
the table.
1004E Reversing, Armature with Dynamic Braking
This option is the same as Option 1001E except two double pole contactors are provided for reversing the DC motor armature rated 1 HP at
90 VDC armature or 3 HP at 180 VDC maximum. Anti-plug protection is provided to prevent armature reversal until a safe minimum speed is
attained. The direction of motor rotation is controlled by external RUN/FORWARD-REVERSE pushbuttons, swtiches or logic. Braking times are
same as option 1001E above.
1719 Fuse Block Kit
Kit includes a fuse block, lead wire with spade connectors, and mounting screw. The option provides external line fuse protection for Series
2120 chassis controllers (fuse not included).
1721 Knob and Dial Plate Kit
This option provides a knob and a dial face graduated 0-100% for use with the potentiometer provided with Series 2120 units.
1730 A/B Barrier Terminal Board
Kit includes screw terminals for all external wiring, one line fuse
holder, and an LED power on indicator in an assembly that plugs
piggy-back onto chassis model units. (fuse not included).
1731 Dual Connector Terminal Adapter
This option provides a two (male) into one (female) push-on terminal to facilitate connection of Series 2120 units for tachometer feedback
and/or inhibit.
1749A Follower, External signal
This option is intended as a low cost alternative which offers greater accuracy and flexibility. Option 1749A is capable of operating from the
following isolated or nonisolated signals: 4-20 DC ma, 0-10 VDC. This option includes a scaling potentiometer for offset adjustment.
Dimensions 1.5" (38) X 3.38" (86) X .75" (19)
1760 Heatsink Kit (Flat)
This option consists of an extruded aluminum heatsink and hardware to mount a Model 2122 controller. This heatsink is intended for use only
with Model 2122 where its greater heat dissipation permits increasing the units original rated horsepower. Option includes special white
silicone grease compound to improve heat transfer.
Dimensions: 4.4375" (113) X 6.75" (171) X .875" (22)
1761 Heatsink Kit (Radial)
This option consists of a unique space saving radial design heatsink and hardware to mount to a Model 2122 controller. This heatsink is
intended for use only with Model 2122 where it’s greater heat dissipation permits a greater horsepower rating than when using the 1760 Flat
Heatsink Kit. Option includes special white silicon grease compound to improve heat transfer.
Dimensions: 2" (51) X 1.375" (35) X 4.25" (108)
OPTION DESCRIPTIONS
COMPONENT UNIT RATED HORSEPOWER
1/12 1/6 1/4 1/3 1/2 3/4 1 1-1/2 2 3
Braking 115V 250 180 129 103 66 44 34 – – –
Torque % 230V – – – – 278 190 130 88 62 44
Stops Per 115V 18 15 12 11 8 6 2 – – –
Minute 230V – – – – 8 6 1 1 1 1
OPTIONS (KITS FOR USE WITH MODELS 2121, 2122, 2123 ONLY)
INPUT VOLTAGE HORSEPOWER RATING
115 VAC 3/4
230 VAC 1-1/2
INPUT VOLTAGE HORSEPOWER RATING
115 VAC 1
230 VAC 2
OPTION INPUT VOLTAGE HORSEPOWER RATING
1730A 115 VAC 1
1730B 230 VAC 3
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