Eaton SmartWire-DT SWD Series User Manual

5 Connection PKE-SWD for motor-protective circuit-breaker PKE12/32/65
5.10 Programming
134 SmartWire-DT module IP20 01/20 MN05006001Z-EN www.eaton.com
measured phase current in relation to the current range of the PKE trip block.
In order to measure the phase current with sufficient accuracy, a phase cur-
rent of at least 85% of the minimum mark of the variable overload release on
the PKE trip block (e.g. trip block PKE-XTUA-4
￫ Imin = 0.85 x 1 A = 0.85 A)
must be present.
The maximum measuring accuracy of the transferred relative current value is
5%.
5.10.1.7 Thermal motor image [TH]
Depending on the current range and the actual current flow, the PKE motor-
protective circuit-breaker calculates the thermal state of the motor and pro-
vides it as a data byte. The motor's thermal load is represented in input byte
3 The value is displayed as a relative value in the ranges 0 % (0x00) to
255 % (0xFF).
The main circuits are interrupted as a result of a motor overload if the thermal
motor model is 110%. In the event of phase failure or phase unbalance, the
main circuits are interrupted at a value of 100 % of the thermal motor image.
In the event of a phase unbalance and trip caused by an overload, the value
of the thermal motor image is raised from 100 % to 110 %.
5.10.1.8 Type of trip block (TYPE)
The modular design of the PKE electronic motor-protective circuit-breaker
enables several different current ranges to be covered. A different PKE trip
block is inserted into the PKE basic device depending on the current range
required.
The following trip blocks of the type “Advanced” can be combined with the
two PKE basic devices PKE12, PKE32 and PKE65.
Table 20: Combination options of the PKE basic device with PKE trip block
The type of PKE trip block is mapped via the TYPE bit field (input byte 4,
Bit 0 - 2). The values of this bit field are assigned to the following PKE trip
blocks:
￫
The value in data field Motor Current [%] can also be read as an
acyclical object
(￫ Section 5.10.3, „Acyclic data“, page 136).
Base
device
PKE-XTUA-1.2 PKE-XTUA-4 PKE-XTUA-12 PKE-XTUA-32 PKE-XTUWA-32 PKE-XTUA-65
PKE12 ✓ ✓ ✓ X X X
PKE32
X X ✓ ✓ X X
PKE64
X X X X ✓ ✓

Eaton SmartWire-DT SWD Series Specifications

General

Brand	Eaton
Model	SmartWire-DT SWD Series
Category	Control Unit
Language	English