AMETEK i-iX Series II - Manual (Page 36)

User Manual California Instruments
36 i Series II / iX Series II / iM Series II
3.6.2 Remote Sense Connector TB3
When selecting external sense mode, it is important that the remote sense connections are
hooked up at the EUT or at the sense point. For single-phase systems, connect Phase A to
phase A and neutral to neutral. For three-phase system configurations, connect all three phase.
NOTE: Do not reverse or swap sense connection phasing or damage to the unit may
result.
NOTE: Do not disconnect the external sense connection if external sense mode is
selected. Doing so will cause the output voltage to go to its maximum value and
could potentially damage an EUT.
All 3001iX and 5001iX AC Sources are shipped with the sense connections wired to the output
terminals. This will prevent a voltage fault when the external sense mode is selected. On
systems consisting of multiple 3001iX or 5001iX chassis, the end user has to connect the
external sense inputs to allow the system to operate. Some system configuration do not support
Internal sense mode in which case the sense connection must always be present at TB3.
To prevent an excessive output voltage caused by an open external sense condition on single
chassis i/iX systems (3001,5001), a set of 10Kohm, 10 Watt resistors can be used to connect
the output terminal block (TB2) to the external sense connection. This will cause a 0.2% error if
the sense lines are not connected. The 10 Watt rating will keep the resistor from burning if the
sense lines connected to the load but the output wiring becomes disconnected. On three phase
systems, the output of all phase output terminals must be connected to the master sense
connector of the master unit to accomplish the same.
Table 3-3: Remote Sense Connector – TB3
Pin Description
A Phase A sense
B Phase B sense
C Phase C sense
N Neutral sense