This document provides information about the CURTIS 1205M-6B403 programmable DC series motor controller. It is a 60V/72V 400A controller that can be programmed via the CURTIS handheld programmer. It has features like 15.6kHz PWM frequency, thermal protection, undervoltage protection, and is compatible with various throttle types. The document provides details on the controller specifications, wiring diagram, key features and dimensions. It is suitable for electric vehicles and replaces the older 1209B-6402 model.

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CURTIS Programmable DC Series Motor Controller
Model: 1205M-6B403
60V / 72V - 400A
320.00 USD
Voltage Option
60V
Throttle Option
Type 0
High Pedal Disable (HPD) Option
ON
Voltage Option
60V
Throttle Option
Type 0
High Pedal Disable (HPD) Option
ON
Free Int'l Expedited Shipping
12-Month warranty
Manual (PDF format)
Specifications:
PWM operating frequency: 15.6 kHz
Electrical isolation to heatsink (min.): 500 VAC
KSI input current (no contactors engaged):
70 mA without programmer
130 mA with programmer
Logic input current: < 2 mA
Status LED output current (max.): < 2 mA
Operating ambient temperature range: -40°C to 50°C
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2. Oceania: Australia
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Storage ambient temperature range: -40°C to 85°C
Package environmental rating: ISTA 2A; electronics sealed to IP54
Regulatory compliance: EN 12895 and EN 61000
1205M-6B403 is the upgraded version of 1205M-6B401 controller, providing new functions "reverse signal output
/ main contactor coil driver" through the 6.35 mm push-on terminal J5. For more details, please read carefully
the CURTIS 1204M/05M/09M/21M Manual.
1205M-6B403 is an ideal choice for replacing old 1209B-6402 controller. CURTIS had stopped the production of
1209B-6402.
We supply also the 1205M-6B403 controller assemblage with throttle (foot pedal).
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3. Notice: For the buyer without CONTROLLER APPLYING EXPERIENCE, please consult your cart/motor dealer and
read carefully the CURTIS 1204M/05M/09M/21M Manual before making the purchase.
Notice: By default, we will deliver the controller with default setting of 72V / 400A / 0-5kΩ. For better applying the
controller to your system, the buyer should confirm with the seller the battery system voltage and the throttle
type (0-5kΩ, 5k-0Ω or 0 – 5V).
Overview:
CURTIS 1205M programmable series motor controllers are designed to provide smooth, silent, cost-effective
control of motor speed and torque. 1205M controllers are updated versions of the popular 1205 controllers, with
the added functionality of being programmable—via the CURTIS Model 1313-4331 Handheld Programmer or 1314
PC Programming Station. This means the controllers can be tailored to the needs of specific applications. In
addition to configuration flexibility, use of the programmer offers diagnostic and test capability.
CURTIS 1205M controllers are the ideal solution for a variety of electric vehicle applications, including industrial
trucks, personnel carriers, material handing vehicles, golf cars, etc.
Wiring Diagram:
By default, the J5 terminal of new 1205M controllers is not activated. The controller wiring is same to the old
1204M controllers without J5 terminal.
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4. Click here to download the diagram (PDF format)
If you want to activate the J5 terminal for using the Rev Input / Main Driver functions, please see the page 7 and 8
of 1204M / 1205M controller manual (PDF format).
Key Features:
CURTIS Model: 1205M-6B403
Norminal Battery Voltage (Volts): 72V (default setting) or 60V
1 Minute Current Rating (amps): 400
5 Minute Current Rating (amps): 275
1 Hour Current Rating (amps): 175
Plug Braking (A2 Busbar): Yes
Ten throttle types can be used with these controllers:
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5. Type 0: 2-wire potentiometer, 0–5kΩ
Type 1: 2-wire potentiometer, 5kΩ–0
Type 2: single-ended 0–5V input
Type 3: 2-wire potentiometer, 4.6kΩ–0
Type 4: 2-wire potentiometer, 5.5kΩ–0
Type 5: 2-wire potentiometer, 1kΩ–0
Type 6: ITS input
Type 7: single-ended 6.3–10.6 V input
Type 8: single-ended 6–12 V input
Type 9: single-ended 3-wire potentiometer, 0–5kΩ
Dimensions: L199xW146xH77 mm
Net Weight: 2.7 kg
Features Include:
High-frequency switching and ultra-low voltage drops provide high efficiency and silent operation.
Simple mounting and wiring with push-on connectors for control signals and plated solid copper buses
for power connections.
Compatible with either a two-wire potentiometer or a voltage throttle.
Throttle fault protection circuitry disables controller if throttle wires become open.
High pedal disable feature prevents controller operation if key is turned on while throttle is applied.
Plug braking diode internal to controller.
Thermal protection and compensation circuit provides constant current limit over operating range and
during under/over temperature cutback; no sudden loss of power under any thermal conditions.
Undervoltage cutback function protects against low battery voltage, including low voltage caused by
external loads.
Easily programmable through the CURTIS Model 1313-4331 Handheld Programmer or 1314 PC
Programming Station.
Rugged anodized aluminum extruded housing meets IP65 environmental sealing standards for use in
harsh environments.
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