Electronics; Primary Control Board - Swisslog Nexus Technical Operations And Maintenance Manual

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LECTRONICS RIMARY CONTROL BOARD

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
1 J4 Carousel mtr
2 J6 Door mtr
3 J7 Push mtr
4 J38 Slide-plate mtr
5 J39 Airvalve mtr
6 J37 Coupler mtr
7 J5 Pinact mtr
8 J30 Car shift enc
9 J28 Push enc
10 J29 Push enc
11 J31 Door enc
12 J19 To HMI J77
13 J20 L/U LED
14 J33 L/U CD
15 J34 S/R Low
16 J35 S/R up co
17 J36 S/R press
18 J15 (Not labeled)
19 J21 Work LED
20 J18 —
APR/2017
Controls the .
Turnstile motor
Security-door actuator
Push-rod motor
Slide-plate motor
Rotary air valve motor
Brake actuator (coupler actuator)
Pin-actuator motor
Shift encoder for the turnstile
Encoder for the push-rod
Second push-rod encoder
Security-door encoder
Connection to the HMI (display) control panel
LED lights at the front turnstile
Load and unload sensor
Send-receive sensor (back of the turnstile)
Sensor on the coupler / brake actuator
Not used
Factory use only
LED lights on the storage panel
Not used
TECHNICAL OPERATIONS AND MAINTENANCE GUIDE |
58
Component #
P4
P6
P7
P38
P39
P37
P5
P30
P28
P29
P31
HMI J77
P20
P33
P34
P35
—
—
P21
—
NEXUS STATION