Section 1General Information3-20 Receiving & Installation MN722Encoder Installation Electrical isolation of the encoder shaft and housing from the motor is required. Electricalisolation helps prevent capacitive coupling of motor noise that will corrupt the encodersignals. See electrical noise considerations in Section 7 of this manual.Cable PreparationEncoder wiring must be shielded twisted pairs, #22 AWG (0.34mm2) minimum size,200′ (60m) maximum, with an insulated overall shield.Control End (See Figure 3-6.)1. Strip the outside jacket approximately 0.375″ (9.5mm) from the end.2. Solder a #22 AWG (0.34mm2) wire to the braided shield.3. Connect all shields to J1-30. To do this, solder a “Drain Wire” from each shieldto the wire soldered to the braided shield in step 2.4. Insulate or tape off ungrounded end of shields to prevent contact with otherconductors or ground.Encoder End1. Strip the outside jacket approximately 0.375″ (9.5mm) from the end.2. Identify each of the four twisted pair and label or use the color codes shown inFigure 3-7 for the optional Baldor Encoder Cable.3. Insulate or tape off ungrounded end of shields and unused conductors toprevent contact with other conductors or ground.CAUTION: Do not connect any shields to the encoder case or motor frame.The encoder +5VDC supply at J1-29 is referenced to circuit boardcommon. Do not connect any shields to ground or another powersupply or damage to the control may result.Figure 3-6 Encoder CablesNo. 9891
