Swisslog Nexus - Electronics

ELECTRONICS | PRIMARY CONTROL BOARD 58
APR/2017 TECHNICAL OPERATIONS AND MAINTENANCE GUIDE | NEXUS STATION
Electronics
Descriptions of the connections and the components they control are shown in the next illustration and
table. The circuit boards are shown in three pieces (left PCB, right PCB and HMI display board) to allow for
greater detail in the illustration. The connections are listed clockwise, starting with the upper-left corner of
the primary circuit board.
Harnesses and cables must be properly attached to their correct positions on the electronic-control
assembly. Most pins on the control panel are scored and configured so that their harness connections fit on
the pins only one way. Each pin set is market with a unique letter-number combination that matches to the
motor or sensor that it controls. Harnesses are also marked with numbers that match the pins where they
are connected at each end. In addition to the lettered and numbered markings, most pins on the circuit
boards also include an abbreviated description of the component that each controls.
Identification numbers for circuit-board pins are preceded by the letter “J,’ identification numbers on the
various components are preceded with a “P.” Harness ends are labeled to make clear where they connect on
the circuit board as well as at the component.
When troubleshooting problems at the station, verify that the harnesses for the affected components
are properly attached at both the control board and the component end point.
Primary control board
The primary control board contains the electronic connections that control motors, encoders, and sensors in
the station.
TABLE 1. Nexus Station circuit board connections—primary control board
Ref. Board # Label Controls the . Component #
1 J4 Carousel mtr Turnstile motor P4
2 J6 Door mtr Security-door actuator P6
3 J7 Push mtr Push-rod motor P7
4 J38 Slide-plate mtr Slide-plate motor P38
5 J39 Airvalve mtr Rotary air valve motor P39
6 J37 Coupler mtr Brake actuator (coupler actuator) P37
7 J5 Pinact mtr Pin-actuator motor P5
8 J30 Car shift enc Shift encoder for the turnstile P30
9 J28 Push enc Encoder for the push-rod P28
10 J29 Push enc Second push-rod encoder P29
11 J31 Door enc Security-door encoder P31
12 J19 To HMI J77 Connection to the HMI (display) control panel HMI J77
13 J20 L/U LED LED lights at the front turnstile P20
14 J33 L/U CD Load and unload sensor P33
15 J34 S/R Low Send-receive sensor (back of the turnstile) P34
16 J35 S/R up co Sensor on the coupler / brake actuator P35
17 J36 S/R press Not used —
18 J15 (Not labeled) Factory use only —
19 J21 Work LED LED lights on the storage panel P21
20 J18 — Not used —