Basler BE1-11m - Page 424

70-8 9424200996
Thermal Curve (49TC) Test BE1-11m
Setting
Value
BESTCOMSPlus Screen
Description
49TC
Enabled
Target Configuration, Targets
Enables 49TC target
Step 24: Use BESTCOMSPlus to configure the BESTlogicPlus Programmable Logic shown in Figure
70-1.
Step 25: Prepare to monitor the 49TC function operation. Operation can be verified by monitoring OUT1
(Tripped) and OUT2 (Overloaded). See Figure 70-1.
Step 26: Connect a three-phase current source to terminals D1 and D2 (IA), D3 and D4 (IB), and D5 and
D6 (IC).
Step 27: Connect a three-wire delta voltage source to terminals C13 (VA), C14 (VB), C15 (VC), and C16
(VN). The multiple acceleration curves allow a different curve to be created for up to three
different voltage levels for reduced voltage starting. Voltage levels between those selected for
the curves are interpolated between curves.
Step 28: Apply 10 Aac three-phase current and 108 V L-L voltage (90% of 120 V nominal). Note that
Curve 1 Voltage % is set to 90%. This means that Curve 1 is used when 90% of nominal
voltage is applied. Verify that OUT2 (Overloaded) closes indicating an overloaded condition.
Verify that OUT4 (Starting) closes. Measure and record the time from when current is applied
until OUT1 (Tripped) closes and the thermal capacity reaches 100%. The expected timing is
11.52 seconds per the Overload Characteristic Curve 1 graph in BESTCOMSPlus. The thermal
capacity (0 to 100%) can be monitored at Metering > Motor > Motor Meter on the front-panel
display. Verify that there is a 49TC target on the front-panel display at Metering > Status >
Targets.
Step 29: Remove three-phase current and L-L voltage. Wait until thermal capacity falls to 0% before
proceeding. Verify that OUT5 (Stopped) closes. Reset all targets.
Functional Test Report
Overload (Standard Curve)
Setting Range = 0.9 to 1.2 (Expected overload pickup current is calculated in Table 70-1.)
Pickup Accuracy = ±2% or ±50 mA, whichever is greater
Dropout should occur between 93-99% of the actual pickup value.
Step
Expected
Pickup
Low
Actual
Pickup
High
Low*
Actual
Dropout
High*
Pass/Fail
6
2.0 A
1.95 A
2.05 A
1.86 A
1.98 A
P / F
* Dropout range is calculated from the expected pickup and may need adjusted based on actual pickup.
Timing Verification (Standard Curve)
Time Dial Range = 1 to 20
Timing Accuracy = ±5% or ±2½ cycles, whichever is greater
Step
Time Dial
Applied Current
Low
Actual Timing
High
Pass/Fail
7
10
10 A
34.409 sec
38.031 sec
P / F
11
10
10 A
30.276 sec
33.463 sec
P / F