Rockwell Automation T6050 SurgeGard Incipient Surge-Conditioning Module - Manual (Page 39)

T6050 Operations & Maintenance Guide Chapter 3 – Applications
11
Factory Calibration Procedure
i) Connect the positive (+) terminal of the 24 VDC power supply to terminal 5 of the T6050 module.
ii) Connect the 250-ohm precision resistor in series between terminal 6 of the T6050 module and the
negative (-) terminal of the 24 VDC power supply.
iii) Connect the waveform generator across the input terminals 1 and 2 of the T6050. Be sure the Jumper
across the T6050 terminals 3 and 4 has been removed.
iv) Turn on the 24 VDC power supply.
v) Set the waveform generator output to 0 Hz sinusoidal waveform and amplitude of 0.5 Volts peak-to-
peak. Adjust the 4 mA (ZERO) potentiometer so that the output voltage from the T6050 across
terminal 6 and the negative (-) terminal of the 24 VDC power supply is 1.0 VDC.
vi) Set the waveform generator output to 10 Hz sinusoidal waveform and amplitude of 0.50 Volts peak-
to-peak. Adjust the X5 – X30 (GAIN) potentiometer so that the output voltage from the T6050 across
terminal 6 and the negative (-) terminal of the 24 VDC power supply is 5.0 VDC.
vii) Repeat steps v and vi until the 1.0 VDC and 5.0 VDC are reached respectfully. Now set the
waveform generator output to 3 Hz and amplitude of 0.5 Volts peak-to-peak; the output voltage from
the T6050 across terminal 6 and the negative (-) terminal of the 24 VDC power supply should be 4.4
VDC.
viii) Set the waveform generator output to 10 Hz and amplitude of 0.30 Volts peak-to-peak; the output
from the T6050 across terminal 6 and the negative (-) terminal of the 24 VDC power supply should
be 3.3 VDC.
ix) Remove the waveform generator from the input terminals 1 and 2 of the T6050.
x) Connect the 0 - 5 VDC power supply across the input terminals 1 (+) and 2 (-) of the T6050. Set the
output of the 0 - 5 VDC power supply to any voltage between 1 and 5 VDC and turn on the power
supply; adjust the output of the 0 – 5 VDC power supply between 1 and 5 VDC, the output voltage
from the T6050 across terminal 6 and the negative (-) terminal of the 24 VDC power supply should
stay at 1 VDC.
Notes:
The T6050 SurgeGard™ output voltage at terminals 5 and 6 has up to ± 100 mV ripples.
It is important to note that each T6050 SurgeGard™ gain needs to be adjusted for each individual
machine (each stage, for multi-stage compressors) while in service. See Field Surge Testing following
pages.