Focus 3
Rugged and Robust
OVERVIEW
The Focus 3 is a single-phase analog drive for DC
motors with power ranges from 1/4 to 5 HP. Years of
proven engineering design matched with surface mount
technology make this newest Focus product rugged and
reliable.
Customer feedback guided the development of the
Focus 3. Many features that were typically available only
as options are now standard, expanding its versatility
and simplifying installation.
Control Techniques’ Focus 3 provides flexibility. You can
DC Drives
stock the complete product line with the four chassis
units (two regenerative and two non-regenerative) and
two enclosure kits.
• Analog DC Drive
• 1/4 to 5 HP, 1 phase, 115-230 VAC
• Non-regen and Regen models
• Isolated control circuit (Regen)
• NEMA 4/12 or Chassis
• Tachometer or armature feedback
• Complete Motor Solutions
FOCUS CHASSIS
—Conveyor
—Rugged
4
3
5
2
6
7
1
8
0
9
1
0
FOCUS
186
F3R2C
F3N5C
F3N2C
F3R5C
FEATURE PERFORMANCE
RATINGS: FOCUS 3
SINGLE PHASE INPUT
.25 to 1 HP (115 VAC)
.50 to 5 HP (230 VAC)
Surface mount design
Provides rugged and reliable operation at a cost-
effective price
NEMA 4/12 enclosure as standard
Protects the integrity of the drive in tough,
demanding environments
Regenerative and non-regenerative models available in the
same footprint
Minimizes machine design variations
Jumper programmable for:
Voltage rating (115-230 VAC)
Frequency (50/60 Hz)
Speed or torque control
Tachometer or armature feedback
Inherent flexibility in the drive design meets
numerous customer requirements with a minimal
inventory of drive models and options
Independent acceleration and deceleration rates
Adaptable to many machine and process speed
control requirements
Speed and current loop stability adjustments
Precisely matches the drive to the motor dynamics
Non-regenerative
Motor
HP
.25 to 1 115 14 90 100 10 1
.50 to 2 230 14 180 200 10 1
.25 to 1 115 14 90 100 10 1
.50 to 2 230 14 180 200 10 1
3 to 5 230 35 180 200 25 1 Chassis F3N5C
3 to 5 230 35 180 200 25 1 NEMA 4/12 F3N5E
Regenerative
Motor
HP
.25 to 1 115 16 90 100 10 1
.50 to 2 230 16 180 200 10 1
.25 to 1 115 16 90 100 10 1
.50 to 2 230 16 180 200 10 1
3 to 5 230 40 180 200 25 1 Chassis F3R5C
3 to 5 230 40 180 200 25 1 NEMA 4/12 F3R5E
Input
AC
Volts
Input
AC
Volts
DC Volts Amps
Amps
Arm Field Arm Field
DC Volts Amps
Amps
Arm Field Arm Field
ModelOutput
Chassis F3N2C
NEMA 4/12 F3N2E
ModelOutput
Chassis F3R2C
NEMA 4/12 F3R2E
Order
Code
Order
Code
Focus 3 is available with factory installed modifications.
To order choose the drive required from the table below
and then add modification suffixes to the order code
(separated by hyphens).
DC Drives
Separately adjustable jog speed
Aids the customer in setting up and testing their
machine
Auto (current/voltage signal) or Manual (speed pot)
operation
Provides local or remote speed control without an
option kit
Isolated control circuit (regen)
Signal common can be earth grounded and tied
directly to other drives without additional isolation
Order String
F3 X X X-XX-XX
Modification 2, etc.
Modification 1
C = Chassis, E = Enclosed
Drive Horsepower: 2 = 2 HP, 5 = 5 HP
N = Non-regen, R = Regen
F3 = Focus 3 Product Family
187
TERMINAL DIAGRAM: FOCUS 3
DC Drives
188
TERMINAL DESCRIPTION
Pin # Type Notes
1 +24 VDC Power Supply For drive use only
2 Tie Point (motor thermal) No internal connection
3 Run Relay +24 VDC @ 10 mA
4 Relay (N.O.) Run relay contact
5 Relay Common 120 VAC, @ 1A resistive
6 Relay (N.C.)
7 Jog Reference Select +24 VDC, 30k Ohms
(Logic Input) (requires run input)
8 Jog Pot Supply Input Analog Input, ±10 VDC
(-10 VDC regen only)
9 +10 VDC Reference Supply, 5 mA max
10 Speed Reference Analog Input, ±10 VDC, 20k Ohms
11 -10 VDC (regen only) Reference Supply, 5 mA max
12 Circuit Common Circuit common hot to earth
ground (non-regen only)
13 Minimum Speed Pot For use with speed pot only
14 Remote Current Limit Pot Wiper input (refer to
Input Jumpers JP6 & JP7)
15 Remote Current Limit Pot CW connection
Input (refer to Jumpers JP6 & JP7)
16 Auto / Manual Input Logic Input, +24 VDC @ 30k Ohms
17 Current follower Input Analog Input, 4-20 or 1-5 mA
18 Voltage follower Input Analog Input, 200 VDC max
19 DC tachometer Input (-) Analog Input, 160 VDC max
20 DC tachometer Input (+) Circuit common
SPECIFICATIONS: FOCUS 3
Adjustments
Maximum Speed 80 to 120% of rated speed
Minimum Speed 0 to 30% of maximum speed
IR Compensation 0 to 20% of rated voltage
Current Limit 0 to 150% of selected range
Acceleration 0.3 to 20 seconds
Deceleration 0.3 to 20 seconds
Jog Speed 0 to 30% of rated speed
Operator Functions
Speed Adjustment Standard
Start/Stop Standard (Enclosed)
Customer Supplied (Chassis)
Run/Jog Option Kit
Forward/Reverse (Regen Only) Option Kit
Auto/Manual Option Kit
DIMENSIONS
Rated Input Voltage 115 or 230 VAC
Control Mode Speed or Torque
Output Current Hi / Med / Low / Xlow
Armature Voltage Feedback Hi (180) / Lo (90) VDC
Tachometer Feedback Hi / Lo
Speed Feedback Selector Armature / Tachometer
Line Frequency 50 / 60 Hz
Current Limit Pot Selector Local / Remote
Logic Control Power 24 VDC
Speed Potentiometer 5k Ohms, 2 watts
Speed Regulation
(95% load change):
Armature Voltage Feedback 1% of maximum speed with IR
compensation. (does not include drift
due to field)
Tachometer Feedback (i.e. 5PY) 0.5% of base speed
Customer Selectable
Control
Drive Operating Conditions
NEMA 4/12 Enclosure Standard (Enclosed)
Option Kit (Chassis)
Altitude 1000m (3,300 ft)
Ambient Temperature 0 to 40°C (32 to 104°F) (Enclosed)
0 to 55°C (32 to 131°F) (Chassis)
Rated Input Voltage 115-230 VAC ±10%
Rated Frequency 48 to 62 Hz
Overload Capacity 150% of selected rating
Efficiency:
Controller (min) 98%
Drive (typical) 86%
DC Drives
189
Focus 3
AC TACHOMETER INPUT
This option kit allows the Focus
3 to accept AC tachometer
feedback. It mounts directly to the
Focus 3 control board and accepts
a range of 45 to 110 VAC at
maximum speed.
Description Order Code
AC Tachometer Input F3ACT
TEN-TURN SPEED POTENTIOMETER
This ten-turn speed
pot provides a vernier
scale for precise and
repeatable speed
setting while a
locking tab prevents
inadvertent speed
changes. It may be
mounted in the Focus
1 or Focus 3 enclosure, or in a remote operator station.
SIGNAL ISOLATOR BOARD
This option is used in
applications where
isolation is required
between an external
control signal and the
motor controller (which
may or may not be at
earth ground potential).
It can be used to isolate a variety of voltage or current
signals (see specifications below) or simply to isolate
the speed potentiometer. The potentiometer power
supply is included. This option can be mounted inside
the Focus 3 cover or panel mounted on a piece of curtis
track (included with kit). Because the board has a unipolar output, it is typically used on single directional
applications
Specifications
Input Power 17 to 30 VDC @ 50 mA max.
(for control circuitry)
Control Relay 24 VDC @ 12.1 mA (JP5 = 24 VDC)
115 VAC @ 20 mA (JP5 = 120 VAC)
Relay Contacts (qty. 2) Form A, 1A @ 250 VAC
Isolation Voltage 240 VAC line voltage
2000 VAC hi-pot for 1 minute
Voltage Ranges 5, 12, 26, 52, 98 & 208 VDC
180 Ohms/volt
Current Ranges 0 - 5 or 1- 5 mA
910 Ohms input impedance
0 - 20 or 4 - 20 mA
250 Ohms input impedance
Speed Pot 5k Ohms, 2 watts (includes
+10 VDC power supply for the pot)
Output 0 to +10 VDC (uni-polar)
Description Order Code
Signal Isolator Board F3NSBD
Description Order Code
Ten-Turn Speed Potentiometer 6160-9001
DC Drives
191
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