AEG SB4 series User Manual Page 350

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23
DTA 107
303
3.6.2 Current Loop Supply for UKA and UVL
The internal (VCK 24, VCK 0 (VCK = checked voltage)) and the external (L+
ext
,M
ext
)
supply is wired to the UKA slot. Which of the two circuits is used to supply the current
loop interface can be selected on the UKA 024 itself with a jumper.
The selection of the supply circuit is also possible for all UVL together in order to be
able to realize an isolated supply for the UKA. If the system is equipped with a
DNP 023-3 power supply, the potential-free 24 VDC voltage source also available at the
L+/M2 terminal block can be wired to VCK 24/VCK 0 or B
ext
/M
ext
. The position of the
switchover jumpers and their electrical mode of functioning is to be taken from
Figure 162.
UKA
UVL
VCK24 (SUE24)
VCK 0 (SUE 0)
L+ext
Mext
24 VDC
M
Ma)
a)
b)
b)
24 VDC
24 V
VCK 24
L+ ext
Mext
Jumper position a) Supply with an internal 24 VDC corresponds to the factory delivery
Jumper position b) Supply with an external 24 VDC
Figure 162 Jumper Position for Voltage Monitoring for the DTA 107
3.6.3 Signal Check Loop
KE The signal check loop is to be connected to the monitored subrack at
KA these interpolation points.
3.7 Error Message
The potential-free changeover contact of the noise pilot relay which is located on the
UKA 024 is wired to terminals 11 ... 13 (MR, MM, MA). The contact can be loaded with
24 V / 50 mA to evaluate the message. The following messages confirm the noise pilot
relay:
Undervoltage < 18 VDC
Access temperature > 70
o
C
Cycle malfunction (Deadman)
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