Wiring Procedure & Fusing; Terminal Strip Wiring - DART Controls 250G CONTROL Serie Manual Del Usuario

1. Size all wires which carry armature or line current to handle currents as specified by national, state, and/or local codes. All
other wires may be #18 AWG or smaller as permitted by local code.
2. Separate control wires from all the Armature and AC line wires when routed in conduits or in wire trays. The enclosed
version has two threaded holes (1/2" NPT) in one endplate, located near the terminal strip, for this purpose.
The 250G is provided with a fuse in AC line 1 (P1-11). This fuse is sized to open in the event of a shorted armature or if an arma-
ture line is shorted to earth ground. As long as 120 VAC input is connected properly, there is no additional fusing needed.
For 240 VAC applications, an external fuse may be used in AC line 2 (P1-10). This fuse should be a Bussman ABC10 or LittleFuse
314-010. This added fuse will provide protection on both AC legs to the 250G. If you desire not to fuse both legs, the fuse in the
control will open in the event of excessive armature currents.
Note: AC current is determined by motor characteristics. In some applications it may be necessary to increase fuse value.
The 250G Series has an 11 position terminal strip for ease of connection.
P1-1
(SPEEDPOT LO) Connects to low side (orange wire) of the 5K speedpot (normally the CCW end). This input is raised
and lowered by the MIN. trimpot. Electronic speed input (voltage follower) may be referenced to speedpot LO if the MIN
trimpot adjustments are to be active. Otherwise, inputs may be referenced to -ARM, which will bypass the MIN trimpot.
NOTE: INPUT MUST NOT BE GROUNDED!!
P1-2
(SPEEDPOT WIPER) Connects to wiper (red wire) of the 5K speedpot (center lead). For voltage follower applications,
this INPUT MUST NOT BE GREATER THAN +12 VOLTS MAXIMUM AND MUST NOT BE GROUNDED!
P1-3
(SPEEDPOT HI) Connects to high side (white wire) of the 5K speedpot (CW end). This is internal +12 volts. For start-
stop applications, the connection between this terminal and speedpot HI can be opened and closed by a SPST switch.
NOTE: INPUT MUST NOT BE GROUNDED!!
P1-4
(-ARM) Connects to minus (-) Armature wire (A2) on motor. For voltage follower applications where the MIN trimpot is
bypassed, connect minus (-) of the follower to this terminal.
P1-5
(+ARM) Connects to plus (+) Armature wire (A1) on motor. 0-90 VDC for 120 VAC input OR 0-180 VDC for 240 VAC
input. See "SPECIFICATIONS" for output rating.
P1-6
(+FIELD) DO NOT USE for permanent magnet motor. This supplies +Field voltage for a SHUNT WOUND MOTOR. Refer
to Field Voltage table. For motors with dual voltage field (i.e. 50/100V or 100/200V), make sure highest value is connected.
P1-7
(-FIELD) DO NOT USE for permanent magnet motor. Connect minus (-) Field wire of SHUNT WOUND MOTOR.
P1-8
VERY IMPORTANT !!!
}
P1-9
CHASSIS VERSION:
ENCLOSED VERSION:
P1-10
VERY IMPORTANT !!!
}
P1-11
CHASSIS VERSION:
ENCLOSED VERSION:
WIRING PROCEDURE
FUSING

TERMINAL STRIP WIRING

FIELD VOLTAGE TABLE
VAC INPUT
VDC FIELD
Refer to "FUSING", shown above.
(SPARE) Make no connection to P1-8 or P1-9
(AC) 120VAC - Connect incoming hot AC (black wire) to P1-9 and Neutral (white wire) to
P1-8. Connect ground (green wire) to Chassis Ground, as shown in
diagram - page 5.
240VAC - Connect both hot sides, one to P1-8 and one to P1-9. Also connect
ground wire to Chassis Ground.
Refer to "FUSING", shown above.
(AC) 120VAC - Connect incoming hot AC (brown or black wire) to P1-11 and Neutral (white
or yellow wire) to P1-10. Connect ground (green wire) to Chassis Ground.
240VAC - Connect both hot sides, one to P1-10 and one to P1-11. Connect ground
wire to Chassis Ground.
(SWITCHED AC) No connections to P1-10 and P1-11. This is for switched AC output. Note
"FACTORY WIRING" (page 5). Pilot lights can be connected between these
terminals. The voltage present at these terminals is AC input voltage.
120 240
100 200
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