Automation Direct Stellar SR55 Series User Manual

Page 3–58 Stellar
®
SR55 Series Soft Starter User Manual – 1st Ed, Rev F – 09/18/2019
Chapter 3: Configuration and Parameters
parameTer deTails – “moniTor” menu of parameTers (ConTinued)
P15.18 – HeatSink Temp Type:
Description: Read Only
The temperature of the internal SR55 heatsink.
• The SR55 will trip when the heatsink temperature exceeds 80°C.
• The internal cooling fans will turn on if this temperature exceeds 40°C.
Range: Modbus Decimal Value: Default:
-20°C – 80°C Address Format 16-bit (Highbyte=b11-b8,
LowByte=b7-b0) Ta ≥ 0 b12=0 Ta < 0 b12=1
Address Note bit12=0 [HighByte*16 +
LowByte/16]bit12=1 256-[HighByte*16 +
LowByte/16]
ambient °C
Modbus Address: Modbus Format:
36544 ( 8EC0 hex ) 16-bit unsigned
Touchscreen Menu Path:
Home → Monitor → HeatSink Temp
P15.19 – Motor Thermistor Type:
Description: Read Only
Indicates the state of the SR55 PTC input; designed for single, double or triple PTC in series.
• PTC thermistor standards DIN44081 / EN60738-1 apply.
( < 300Ω @ 25°C, typically 4kΩ @ nominal temperature )
• The value indicated is a not in degrees Celsius, but is an internal representation.
• At 25°C the value displayed should be less than 100, and the SR55 trips when value > 400 (4kΩ).
(open circuit = 1023)
• The value will increase rapidly when the motor thermistors approach their nominal
temperature.
• If thermistors are connected, the “Thermistor trip” should be turned “on.”
Range: Modbus Decimal Value: Default:
0 – 1024 linear scale ( 1 = 1) 1024
Modbus Address: Modbus Format:
10432 ( 28C0 hex ) 16-bit unsigned
Touchscreen Menu Path:
Home → Monitor → Motor Thermistor
P15.20 – Overload Type:
Description: Read Only
The SR55 has an “Overload” function that is an electronic equivalent to a thermal overload.
• “Overload” displays the overload capacity, which is a measure of how close the SR55
“Overload Trip” is to tripping.
• When “Current I
rms
” is greater than the “Overload Level,” the “Overload” increases in
accordance with the “Trip Class.”
• When “Current I
rms
” is less than the “Overload Level,” the “Overload” decreases exponentially
(if greater than 50%).
• When the “Overload” reaches 100% the SR55 will trip.
• During situations when (I-motor) is equal to (I-SR55) the overload will indicate 50%.
Range: Modbus Decimal Value: Default:
0% – 100% linear scale ( 1 = 0.006104 % )
0% – 100% = (0 – 16384)
x% / 0.006104% = Modbus dec. value
EX: Modbus value of 5250 = 32.05%
0%
Modbus Address: Modbus Format:
33408 ( 8280 hex ) 16-bit unsigned
Touchscreen Menu Path:
Home → Monitor → Overload

Automation Direct Stellar SR55 Series Specifications

General

Brand	Automation Direct
Model	Stellar SR55 Series
Category	Controller
Language	English