Device selection A-ISOMETER®Control and auxiliary circuits

Control and auxiliary circuits Control and auxiliary circuits are used for additional functions, such as command output, interlocking, alarm and measuring circuits.For these circuits particular emphasis is placed on operational reliability. Control circuits, such as machine control systems or industrial safety lighting, are usually limited in space.
1.0 Examples of application Type Application – Control and auxiliary circuits Fields of application Nominal voltage range U
n Frequency range f
n Control circuit AC System leakage capacitance C
e Response values/contacts Number of response values Response value Alarm contacts Operating mode Response time t
an at R
F = 0.5 x R
an and C
e = 1 µF Start-up delay t Response delay t
on Communication "Power On" LED LEDs: Alarm AC, Alarm L+, Alarm L-
Control circuit DC Alarm LED Measured value display General features Measuring principle* Test / reset button Fault memory Selective fault location L+/L- Connection monitoring * Refer to chapter Annex –"Technical aspects…“
Control circuit AC/DC 6 Main catalogue part 1 – 08.2007/Insulation monitoring