Nautel NV20LT Installation Manual

Nautel NV20LT Installation Manual Manual pdf 50 page image

NV20LT/NV15LT INSTALLATION MANUAL COMMISSIONINGPAGE 2.9.2 VERSION 4.0 2018-02-26Pre-Commissioning Tasks1. Terminate the transmitter's RF output into a precision, 50 , resistive dummy load that isadequately rated for the maximum expected total power output.2. Verify that all panels are installed, and that their attaching hardware is firmly tightened.3. Verify all program inputs are connected to the back of the controller and optional exciter.4. Close the external interlock (if installed). If an external interlock is not installed, simulate theclosing of the external interlocks by applying a short circuit between TB1-1 and TB1-2 of theoptional remote interface PWB (A16), if installed. If the remote interface PWB is not installed,apply a short circuit between pins 19 and 20 of the REMOTE I/O-A (A1J2A) connector on the rearof the controller (A4).NOTE: An interlock jumper (Nautel Part # 211-5060) is provided in the NV20LT/NV15LT’s ancillary kit. Itis intended to plug directly into the REMOTE I/O-A (A1J2A) connector (pins 19 and 20), on the rear ofthe controller module (A4) or into the INTLK inputs (TB1-1 and 2), on the optional remote interfacePWB (A16), if installed. This jumper cannot be used if you are using a D-sub connector to make otherremote I/O connections. Instead, you must solder a jumper between pins 19 and 20 of the matingconnector (Nautel Part # JS28, also provided in the ancillary kit).5. Set the switch on the front of each RF power module to its ENABLE position.WARNING! If a jumper is placed between the INTLK inputs [pins 19 and 20of the controller’s REMOTE I/O-A connector (A1J2A) or TB1-1 and 2 on theoptional remote interface PWB], safety features controlled by the externalinterlocks will be disabled. A fail-safe method of alerting personnel to thisfact should be implemented. Voltages which are dangerous to life will bepresent on the RF output stages and the antenna system if the transmitteris turned on.