Installation, Operation and Service Manual LKAT
2
Portable
© 2018 DynAmp, LLC Page 26
047312 A
Optional PE PCB – Current Loop Output
• Output Bias (coarse) : SW4
• Output Type : SW5
• Output Gain (coarse) : SW1 and SW2
• Output Bias (fine) : Trimpot
• Output Gain (fine) : Trimpot
Optional PE PCB – Trip 2 & 3 Setpoints
• Trip 2 Protection Polarity : SW3
• Trip 2 Setpoint : R33 (medium) and R46 (fine)
• Trip 3 Protection Polarity : SW3
• Trip 3 Setpoint : R34 (medium) and R47 (fine)
Optional RMS Display PCB – Display
• Decimal Point position
• DPM Mode
• RMS Signal Conditioning Options : SW1F, G, & H (SW1-6, 7, & 8)
• Input Scale Factor : SW1E (SW1-5)
• Input Attenuation : SW1A, B, C, & D (SW1-1, 2, 3, & 4)
• DPM Gain (fine) : R12
The Optional PE and/or RMS Display pc board assemblies may be added, configured
and
calibrated in the field. In this case, the Main pc board assembly output signal is used
as the reference output signal with the LKAT
2
System measuring normal bus current.
5.9 FIELD CONFIGURATION OF TRIP SETPOINTS
Trip setpoints may be re-configured on site for any level between 5% and 100% of full-scale.
The trip polarity may also be re-configured on site. However, the Accuracy Diagnostics trip
setpoint should not be adjusted without consulting the factory.
Refer to assembly drawings for the Main pc board and PE pc board (optional) included at
the end of this manual. To change trip polarity adjust SW2A and SW2B according to the
table on the assembly drawing.
The trip setpoint is proportional to the current where the trip will occur: “Trip Current” – from
Metering Unit nameplate.
The easiest method to check or change trip setpoints is to use the DynAmp LKAT MUT
system which is specifically designed to simplify this process as well as verify proper
operation afterwards.
To configure the trip setpoint without the LKAT MUT or complete test stand, the following
method can be used.
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