MotionKing (China) Motor Industry Co., Ltd.

3

Elimination of Heat

Driver’s reliable working temperature should be <65 ,

℃

and motor working temperature

should be <80 ;

℃

Recommend use automatic idle-current reduction mode, namely current automatically be

reduced to 60% when motor stops, so as to reduce driver heating and motor heating.

3. Pin Assignment and Description

The 3L883M has two connectors, connector P1 for control signals connections, and connector P2

for power and motor connections. The following tables are brief descriptions of the two connectors.

More detailed descriptions of the pins and related issues are presented in section 4, 5, 9.

Connector P1 Configurations

Pin Function

Details

PUL+(+5V)

PUL-(PUL)

Pulse signal: In single pulse (pulse/direction) mode, this input represents

pulse signal, effective for each rising edge or falling edge (set by inside

jumper J1); 4-5V when PUL-HIGH, 0-0.5V when PUL-LOW. In double

pulse mode (pulse/pulse) this input represents clockwise (CW) pulse. For

reliable response, pulse width should be longer than 1.5μs. Series connect

resistors for current-limiting when +12V or +24V used.

DIR+(+5V)

DIR-(DIR)

DIR signal: In single-pulse mode, this signal has low/high voltage levels,

representing two directions of motor rotation; in double-pulse mode (set by

inside J1 jumper), this signal is counter-clock (CCW) pulse, effective for

low level. For reliable motion response, DIR signal should be ahead of PUL

signal by 5μs at least. 4-5V when DIR-HIGH, 0-0.5V when DIR-LOW.

ENA+(+5V)

ENA-(ENA)

Enable signal: This signal is used for enabling/disabling the driver. High

level (NPN control signal, PNP and Differential control signals are on the

contrary, namely Low level for enabling.) for enabling the driver and low

level for disabling the driver. Usually left UNCONNECTED (ENABLED).

CW/CCW mode.

MotionKing (China) Motor Industry Co., Ltd.

4

Selecting CW/CCW or PUL/DIR Mode

There is a jumper J1 (including pin 1 to pin 9) inside the 3L883M specifically for selecting pulse

signal mode. Settings for the one-pulse mode (PUL/DIR) and for the double-pulse mode

(CW/CCW) are shown in the following figure. Default mode out of factory is PUL/DIR mode and

effective at rising edge.

(a) PUL/DIR mode and effective at rising edge

(b) PUL/DIR mode and effective at falling edge

(c) CW/CCW mode and effective when the

(d) CW/CCW mode and effective when the

opto-coupler of the fixed level is in conducting state

opto-coupler of the fixed level is in off state

Figure 2: Control signal mode setting jumper

Connector P2 Configurations

Pin Function

Details

GND

DC power ground

VDC

DC power supply, +24VDC－+80VDC, Including voltage fluctuation and

EMF voltage.

U

Motor phase U

V

Motor phase V

W

Motor phase W

Exchanging the connections of two phases to the driver will reverse motor motion direction.

4. Connections to Controller

The 3L883M can accept differential and single-ended control signals (including open-collector,

namely common-anode and PNP output, namely common-cathode). The 3L883M has 3 optically

isolated logic inputs which are located on connector P1 to accept line driver control signals. These

inputs are isolated to minimize or eliminate electrical noises coupled onto the control signals. It’s

recommended to use line driver control signals to increase noise immunity of the driver under an