![Stober SD6 Series Manual Download Page 102](http://html.mh-extra.com/html/stober/sd6-series/sd6-series_manual_1381243102.webp)
ID 442426.04
102
WE KEEP THINGS MOVING
Connection
7
Manual SD6
7.3.8
X2: Motor temperature sensor
Motor windings are monitored thermally using the motor temperature sensors
such as PTC or KTY sensors.
PTC sensors
are thermistors and their resistance changes significantly with the
temperature. When a PTC reaches its defined nominal response temperature,
the resistance increases dramatically, by twice or more the original resistance
to several kOhms. PTC sensors allow for effective motor protection as PTC
drillings.
On the other hand,
KTY sensors
are temperature sensors with linear
characteristic resistance curves. The motor temperature can be measured with
a KTY sensor. However, the measurements are limited to one motor winding,
which also restricts motor protection considerably compared with PTC drillings.
Terminal X2 is provided for connecting motor temperature sensors. This means
you can connect either one KTY 84 in one winding, one PTC per winding or up
to two PTC drillings for operation with multiple motors.
Motor temperature sensor lines in the resolver or EnDat cable (SDS 4000)
If you replace a SDS 4000 with a SD6, the lines of the motor temperature
sensor are carried in the previously used resolver or EnDat cable. To be able
to continue using the cable, you need the accessory part RI6 (see section 3.4
Accessories) to which you can the connect cable via an interface adapter. The
adapter is available in three different designs (see section 3.4 Accessories).
Terminal description X2
Information
Note that evaluation of the temperature sensors is always active. If
operation without temperature sensor is permitted, the connections
must be bridged on X2. Otherwise a fault will be triggered when the
device is switched on.
Pin
Designation
Function
7
1TP1/1K1 +
Connection of PTC or KTY
8
1TP2/1K2 -
Maximum conductor cross-section
Connection type
Maximum conductor cross-section [mm
2
]
Rigid
2,5
Flexible
2,5
Flexible with cable end,
without plastic sleeve
2,5
Flexible with cable end, with
plastic sleeve
2,5
2 leads with the same cross-
section with double cable end
—
7
8