Siemens TC12 사용자 설명서

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TC12 Installation, Commissioning & Maintenance Handbook 
network termination unit). In order to prevent the cable being 
disconnected from the PCB by accident the PCB cover fits around 
the end of the plug on the cable in order to retain it. 
 
6.3.3.3  Connection of SCOOT Detector Inputs to an Integral TC12 OTU 
On an integral TC12 OTU the SCOOT detector inputs to the controller should be 
connected to the normally open contacts on the detector backplane (make for 
vehicle presence). On an STC detector back plane these are the even numbered 
pins starting at pin 10. 
 
6.3.3.4  Lamp Monitor Unit Connections 
If the installation uses the lamp monitoring facility on the integral OTU card, then 
Current and voltage monitoring transformers are connected to PLB on the OTU 
PCB via a 64-way connector housing (part number 508/4/26138/008). The current 
and voltage monitor transformers have two wires each, terminated in crimps that 
push in to the connector housing.  
 
Note:  Only 60 positions are used on the 64 way housing. Positions 1, 2, 63 and 
64 are unused as they do not line up with any of the 60 pins on the plug 
PLB. 
 
Figure 33 shows the pin out of PLB. LMU input 1+ and LMU input 1- (PLB pins 1 
and 2), correspond to positions 3 and 4 respectively on the 64 way housing and so 
on. 
 
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