WEG SRW 01, User Manual

Page: 90 / 148

Parameterization
5-44 | SRW 01
5
P645 – PTC Protection Action
Adjustable
Range:
0 = Alarm
1 = Switch Off (Trip)
Factory
Setting:
1
Proprieties: Sys, rw
Description:
It defines the action of the PTC protection.
NOTE!
The shorted PTC alarm is activated when the sensor resistance added to the one of the cables, is
lower than 100 Ω.
Table 5.14 on page 5-44 informs the cross section and the maximum length of the
cables, in order to assure shorted sensor detection.
Table 5.14: Considerations for PTC sensor short-circuit detection
Cable
Cross Section
Maximum Distance With
Short-Circuit Detection
2.5 mm
2
2 x 250 m (820.2 ft)
1.5 mm
2
2 x 150 m (492.1 ft)
0.5 mm
2
2 x 50 m (164 ft)
5.7.11 Overload
The SRW 01 has a rigid, effective and totally programmable motor thermal protection. In case of actuation, it
indicates “E0005” – Overload, then the motor may be switched off or only an alarm be activated, according to the
parameter P641.
P640 – Relay Tripping Class
Adjustable
Range:
0 = Disabled
1 = Class 5
2 = Class 10
3 = Class 15
4 = Class 20
5 = Class 25
6 = Class 30
7 = Class 35
8 = Class 40
9 = Class 45 Factory
Setting:
2
Proprieties:
Sys, rw
Description:
It selects the SRW 01 overload protection tripping class.
ATTENTION!
Program the tripping class that better adapts to your application and protects the motor in the allowed
working regimen, as well as the other protection devices.
P641 – Overload Protection Action
Adjustable
Range:
0 = Alarm
1 = Switch Off (Trip)
Factory
Setting:
1
Proprieties: Sys, rw
Description:
It defines the action of the overload protection.