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Relay PCA 04523 Addendum to E-Series Operator Manuals
There are two versions of the new relay card. Table 1-1 above cross references the PCA version
with the various E-series analyzer models.
1.3.1. Version 045230200
This is the most commonly used version of the Relay PCA. It includes a bank of solid state AC
relays. This version is installed in analyzers where components such as AC powered heaters must
be turned ON & OFF. A retainer plate is installed over the relay to keep them securely seated in
their sockets.
A
C Relay
Retainer Plate
Retainer
Mounting
Screws
Figure 1-2: Relay PCA P/N 045230200 with AC Relay Retainer In Place
1.3.2. Version 045230100
This is the base version of the Relay PCA. It does not include the AC relays and is used in
instruments where there are no AC powered components requiring control. A plastic insulating
safety shield covers the empty AC Relay sockets (See Figure 1-3)
CAUTION
Never remove this safety shield while the instrument is plugged in and
turned on. The contacts of the AC relay sockets beneath the shield carry
high AC voltages even when no relays are present
AC Relay
Safety Shield
Figure 1-3: Relay PCA P/N 045230100 with Safety Shield In Place
05118 Rev B3 3