Lenze 9400 Manual - Manual (Page 259)

Power supply modules
Control terminals
6

259 EDS94SPP101 EN 7.1
Digital inputs, digital outputs
Terminal X12 Labelling Description
GOI GND digital out/in
DI1 External control of the brake chopper; its only purpose is to
synchronise the brake choppers if a second power supply module is
used.
DO1 Mains OK
DO2 Brake chopper active
DO3 Short circuit in brake chopper
SSP9400X12
DO4 Heatsink overtemperature
Terminal data
Conductor cross-section Tightening torque
[mm 2 ] [AWG] [Nm] [lb-in]
Flexible
0.2 ... 2.5 24 ... 12 Spring terminal With wire end
ferrule
Stripping length / contact length: 10 mm
Synchronisation
The device-internal brake chopper operates automatically and independently even if the
control inputs are not wired.
Depending on the selected mains voltage, the brake resistor is connected if the DC-bus
voltage is exceeded (e.g. due to excessive braking energy).
If the brake choppers of power supply modules in a DC-bus connection need to be
synchronised, proceed as follows:
1. The 24-V supply of the control card (X11) must be independent of the mains voltage
at the mains connection and switched on.
2. All power supply modules of the DC-bus connection must have the same brake
chopper threshold (according to the mains).
3. The DO2 (X12) digital output of the master power supply module needs to be wired
to the DI1 (X12) digital input of every other power supply module of the DC-bus
connection. The GOI connections (X12) of all power supply modules of the DC-bus
connection must be interconnected.