AMI Analyzer Manual
Installation Procedure
8
Power connections:
The 2001LC is designed to be operated from a 24V power supply only. Use a suitable
wall adapter, or other kind of stable DC power supply. Make sure the ground is
connected to a real ground – otherwise you may experience excessive noise and RFI
interference.
Interconnections:
Figure 3. Back panel screen print of the 2001LCS.
Alarm connections:
The alarm connections are single pole double throw relays, i.e. Form C contacts. They
are normally preset to operate as high alarms, failsafe, with no alarm delay, though they
can be supplied with other settings. By failsafe is meant that the relays are powered
when NOT in alarm, so that if power fails, they indicate an alarm condition. The contacts
can handle AC or DC voltages, and can carry up to 5A of current for a resistive load.
Inductive loads such as solenoid valves should be “snubbed” – we suggest that you
connect diodes or Zener diodes or “Transzorbs” directly across them to absorb the
inductive spike. Do not connect them across the relay terminals on the analyzer, since
the resultant current loop will transmit a lot of RFI that could upset sensitive devices
nearby.
Output connections:
This unit is equipped with an isolated 4-20mA output. It is capable of driving a 600 Ohm
load and will saturate at more than 125% of the nominal full scale range.
Serial connections:
No serial connection is provided on this analyzer.
