40
Installation RSP 20/25/30/35
Release
15
12/2017
2.5.4 Supply voltage with the characteristic value TT
You will find information on the characteristic values here:
“Device name and product code” on page 19
You have the option of supplying the supply voltage redundantly, without
load distribution.
Both supply voltage inputs are uncoupled.
Figure 6: Supply voltage with characteristic value TT: 2-pin terminal block with
screw lock
Note: For the redundant power supply, only use voltage sources whose
negative terminal is grounded. The use of different voltage sources can lead
to equipment damage.
For every supply voltage to be connected, perform the following steps:
Remove the power connector from the device.
Connect the wires according to the pin assignment on the device with the
clamps.
Fasten the wires connected by tightening the terminal screws.
You find the prescribed tightening torque in chapter:
“General technical data” on page 49
With a non-redundant supply of the supply voltage, the device reports the
loss of a supply voltage. You can prevent this message by applying the
supply voltage via both inputs, or by changing the configuration in the
Management.
Type of the voltages
that can be
connected
Specification of the supply
voltage
Pin assignment
DC voltage Rated voltage range DC
12 V DC ... 24 V DC
Voltage range DC including
maximum tolerances
10.2 V DC ... 32 V DC
+ Plus terminal of the supply voltage
− Minus terminal of the supply
voltage
Table 9: Supply voltage with characteristic value TT: type and specification of the
supply voltage, pin assignment
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