Control unit of frame R11 117
ground. If a high-frequency capacitor of a few nanofarads, eg. 3.3.nF / 630 V, cannot be
used at one end, leave that end of the shield unconnected.
WARNING! As the inputs pictured above are not insulated according to
IEC 60664, the connection of the motor temperature sensor requires double or
reinforced insulation between motor live parts and the sensor. If the assembly
does not fulfill the requirement, the I/O board terminals must be protected against contact
and must not be connected to other equipment or the temperature sensor must be isolated
from the I/O terminals.
DI6 (XDI:6) as PTC sensor input
A PTC sensor can be connected to this input for motor temperature measurement as
follows. The sensor resistance must not exceed the threshold resistance of the digital input
at the motor normal operating temperature. Do not connect both ends of the cable shield
directly to ground. If a high-frequency capacitor of a few nanofarads, eg. 3.3.nF / 630 V,
cannot be used at one end, leave that end of the shield unconnected. See the firmware
manual for parameter settings.
Note: PTC sensors can alternatively be connected to FEN-xx encoder interface module.
1. Set the input type to voltage with switch J1 for analog input AI1or with J2 for analog input AI2. Set the
appropriate analog input unit to V (volt) in parameter group 12 Standard AI.
2. Select the excitation mode in parameter group 13 Standard AO.
WARNING! As the inputs pictured above are not insulated according to
IEC 60664, the connection of the motor temperature sensor requires double or
reinforced insulation between motor live parts and the sensor. If the assembly
does not fulfill the requirement, the I/O board terminals must be protected against contact
and must not be connected to other equipment or the temperature sensor must be
isolated from the I/O terminals.
1…3 × Pt100/Pt1000/PTC or 1 × KTY
XAI
XAO
AIn+
AIn-
AOn
AGND
1)
2)
T
TT
PTC
DI6
+24VD
T
“0” > 4 kohm
“1” < 1.5 kohm
I
max
= 5 mA
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