Santerno Sinus Penta - Page 392

SINUS PENTA
PROGRAMMING GUIDE
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C265 (C268, C271) Thermal Protection Activation
C265 (Motor 1)
C268 (Motor 2)
C271 (Motor 3)
Range
0 ÷ 3
0 : [Disabled]
1 : [No Derating]
2 : [ForcedCool.]
3 : [Fan Shaft]
Default
3
3: [Fan Shaft]
Level
BASIC (C265); ADVANCED (C268, C271)
Address
1265; 1268; 1271
Function
This parameter enables the Motor Thermal Protection function.
It also selects the type of thermal protection among different trip patterns.
C266 (C269, C272) Pick-up Current
C266 (Motor 1)
C269 (Motor 2)
C272 (Motor 3)
Range
1 ÷ min [120%; [((Imax/Imot)*100) %] 1 ÷ min [120%; [((Imax/Imot)*100) %]
Default
105
105%
Level
ADVANCED
Address
1266, 1269, 1272
Function
This parameter sets the thermal protection pick-up current expressed as a
percentage of the rated current of motor 1 (2, 3).
C267 (C270, C273) Thermal Time Constant
C267 (Motor 1)
C270 (Motor 2)
C273 (Motor 3)
Range 1 ÷ 10800 1 ÷ 10.800 s
Default
720
720s (corresponding to IEC Class 20)
Level
BASIC (C267); ADVANCED (C270, C273)
Address
1267; 1270; 1273
Function
This parameter sets the thermal time constant of the connected motor. The time
constant is the time within which the calculated thermal stage has reached 63% of
its final value.
The motor attains its thermal time constant when it operates in constant load
conditions for a time equal to approx. 5 times the constant set in this parameter.
C274 PTC Thermal Protection Enable
C274
Range
0 ÷ 1
0: Disabled ÷ 1: Enabled
Default
0
Disabled
Level
ADVANCED
Address
1274
Function
This parameter enables the PTC probe (AIN2 analog input)
NOTE
If the PTC thermal protection (C274) is enabled, the reference from AIN2
is automatically
managed as a 0 ÷10V input. The only parameter enabled for the control of AIN2 is P064;
P060, P061, P062 and P063 cannot be viewed and are not considered for calculations.