SAMI G S Data parameter 12, EXT REF 1 OR 2 de- pending on the setting of parameter 11.2 EXT CONT PLACE SEL (Keypad, DI1-DI6). 8 Commissioning External Reference 1 8.1 Safety Precautions External frequency reference from control place R1. The signal source selection is made with parameter 11.5 EXTERNAL REF1 SEL. Refer to page 37 for available options. Before commissioning, observe the follow- ing warnings. The Motor Control Card is at mains potential when the SAMI GS is connected to the mains. This voltage is extremely dangerous and can cause severe injury and even death if you come in contact with it.
External Reference 2 External Reference 2 goes through an application block, where it can be manip- ulated as Keypad Reference 2. The signal source selection is made with parameter 11.6, EXTERNAL REF2 SEL. Refer to page 37 for available options. When the supply voltage is disconnected, it will take about 5 minutes before the capaci- tors in the intermediate DC circuit are dis- charged to a safe voltage. Do not take any further actions within the frequency converter for at least these five minutes. 7.9 Parameter Lock Parameter Lock prevents unauthorised per- sons altering the parameters.
If parameter lock is active (Operating Data parameter 23 or digital input 1-6/parameter 11.11), it is not possible to change to Setting mode (control place can still be selected with para. 9). To ensure that the voltage level is safe, al- ways measure the voltage between X2 + and - on brake terminals (see Fig. 5-2 on page 18). Note! If internal braking option is used (ter- minal numbering X2: R+ and R-) measuring the voltage cannot be done safely. The SAMI GS Parameter Lock can be controlled with the Keypad (Operating Data parameter 23) or a digital input. The control place is selected with parameter 11.11 PARAM. LOCK SEL (Keypad,DI1-DI6).
To activate the Parameter Lock, set Operating Data parameter 23 PARAMETER LOCK to LOCKED xxx (control place = Keypad) or activate the selected digital input (control place = DI). The Control Interface and Optional Cards are isolated from the main circuit, BUT CAN HAVE DANGEROUS VOLTAGES present at the relay contacts, X50 terminals 21 - 29, if they are switching mains voltage. Always check for high voltage at X50 terminals 21 - 29 (and at relay contacts of Option Cards) before working on the Control Interface and Optional Cards. The Parameter Lock control place is indic- ated in Operating Data parameter 23 PA- RAMETER LOCK.
Characters xxx after the parameter value (OPEN xxx, LOCKED xxx) indicate that the current control place is Keypad. When the SAMI is connected to the mains, the motor terminals U2, V2 and W2 (and the brake terminals X2) are live even when the motor is not running. To open the Parameter Lock, you must enter the correct combination. The combination for all SAMI GS units is 358. When viewing PARAMETER LOCK, indent to setting mode and set the 358 code. Press to open the Parameter Lock. DO NOT WORK ON THE FRE- QUENCY CONVERTER WHEN POWER IS APPLIED! 29 co m