BALDOR
256
DC Motors & Controls
Farm Duty
Motors
Definite Purpose
Motors
Unit Handling Motors
Brake Motors
200 & 575 Volt
Motors
IEC Frame
Motors
50 Hertz
Motors
Inverter/Vector
Motors & Controls
DC Motors
and Controls
Soft Start & Dynamic
Brakes
NEMA 1 Enclosed DC
Controls for PMDC and
Shunt Wound Motors
1/100 thru 2 Hp
115/230 VAC Single Phase 50/60 Hz.
Applications:
General purpose industrial use with permanent magnet or
shunt wound DC motors.
Features:
SCR controls have a free-wheeling diode and feature adjustable
accel, decel, current limit, ±R comp, min. and max speed pots to match
applications. The anti-demag feature protects PM motors and helps protect
the SCR power bridge against direct shorts. The controls have US and
Canadian U² component recognition.
A Plug-in Horsepower Resistor
®
and armature fuse
must
be ordered and
installed in BC138, BC139, BC140, BC140-FBR, BC141 and BC142.
NOTE:
(a)
1 Hp at 115V and 2 Hp at 230V requires BC143 heatsink kit. See page 330 for features. FBR=Forward/Brake/Reverse.
NOTE:
BC24-²F is an AC line filter required for applications where CE is required if the control is not filtered elsewhere in the application. This filter may be used on most
115 or 230 VAC, single phase applications where CE is required.
DC Control Accessories
BC140 ENC²OSED (NEMA 1)
Hp
Range
Catalog
Number
LIst
PrIce
Mult.
Sym.
Ap’x
Shpg.
Wgt. Lbs.
±nput
Voltage
1/100-1/3
BC138
218
E9
1
115
1/50-3/4
BC139
218
E9
1
230
1/100-2
(a)
BC140
369
E9
3
115/230
1/100-2
(a)
BC140-FBR
510
E9
3
115/230
Catalog
Number
DescrIptIon
LIst
PrIce
Mult.
Sym.
Ap’x.
Shpg.
Wgt.
BC24-LF
Ac Line Filter for use with CE Applications
75
E9
1
BC143
External Heatsink Kit (BC140, BC140-FBR, BC141, BC142, BC204)
72
E9
2
BC144
Forward-Brake-Reverse Switch Kit for BC140
124
E9
1
BC145
Signal Isolator Board
211
E9
1
BC146
Current Sensing Relay/Overload Protector
136
E9
1
BC147
Barrier Terminal Board
(BC141 and BC142)
30
E9
1
BC148
Replacement Potentiometer Kit (5K ohm)
13
E9
1
BC149
Knob and Dial Kit
15
E9
1
BC152
Barrier Terminal Board With Signal Isolator (BC141 and BC142)
193
E9
1
BC218
DIN-rail mounting kit for BC141, BC142 or BC204
36
E9
1
1/15 thru 1/4
115 VAC Single Phase 50/60 Hz.
Applications:
Conveyors, machine tools and other applications requiring
adjustable speed.
Features:
Simple DC motor control with built-in circuit breaker, center lock
reversing switch (center off), on/off switch, 7 foot SJO oil resistant cord, and
variable voltage transformer for manual speed adjustment. NEMA 1 enclosure
is standard. CSA list file # ²R54532.
Fractional Horsepower
DC Speed Controls for
PMDC Motors
Max
Hp
Catalog
Number
LIst
PrIce
Mult
Sym.
Ap’x
Shpg. Wgt.
Amp
CapacIty
±nput
Voltage
1/15
BC110
549
E9
5
1.0
115VAC
1/8
BC115
586
E9
6
1.5
115VAC
1/4
BC130
746
E9
10
3.0
115VAC