Description Of Functions - gefran KFM05a Instruction Manual

4. Description of functions

There are five potential-free (no reference to GND / PE) digital inputs (input 1, input 2, input 3,
input 4, input enabling, terminals X7:3 - X7:7). These inputs become active by an applied voltage
from 10 to 28 V. Each of these inputs can be configured from <<1-active>> (24 V at the input) to
<<0-active>> (0 V at the input) or depending on the software-function permanently switched on via
software.
The switching logic is set with jumper ST3.
Two analog inputs 1 and 2 (terminals X7:10 and X7:11) can be used for analog data inputs (e.g.
speed set point). Independently from each other, they can be set with the DIP-switches 3 to 6 (see
chapter 3.1.7) for 0 - 10 V or 0 - 20 mA.
If this input is used as a switch-input for 24 V, so a 220 kΩ resistor (R1, R2) must be used. If no
resistor is used, the switching-threshold is at 5 V which can lead to problems and disturbances.
Example:
Remark:
The inputs analog 1 (X7:10) and analog 2 (X7:11) are internally protected and can be controlled
with max. 30 V against GND (X4:5). The voltage is limited internally to 5 V.
In standard three potential-free digital outputs (terminals X6:21 to X6:23) are programmed for the
messages "fault", "position reached" and "function" (by request they can get other functions). Their
logic function can be reprogrammed each. The switching logic is defined with the potential at
X6:24.
The switching logic of the inputs and outputs can be set independent by each other with jumper
ST3 and output X6:24 to positive or negative logic.
Via RS 232-interface the drive can be programmed and diagnosed from a PC or LAPTOP in a
simple way with the added software-program E@syDrive, see chapter 5. (the description of
PROFIBUS is another documentation).
An internal voltage source at X7:13 and X7:14 (max. load 100 mA) enables the direct connection of
push buttons or switches resp. relays at the in- and outputs without using an external voltage
source.
Remark:
So in many applications a PLC is not necessary on account of the extensive possibilities for
parameterizing the drive. The input enabling always has to be active, if the KFM05a is in
operation, because this input enables directly the power amplifier. If this input is inactive
the power amplifier is blocked and the drive becomes torque less (resp. coast to stop).
Art.-No.: 918 111e
SIEI-AREG GmbH
Gottlieb-Daimler-Straße 17/3
74385 Pleidelsheim Germany
Fon: +49 7144 89736 0
S3.5 S3.6
Page 36 von 60
Switch
Sensor
Digital 0 / 24V
Analog 0 – 10V
Rev. 09/14