Addendum to | Relay PCA 04523 |
1.2. What’s Different
The major differences between the Relay PCA 04523 and Relay PCA 03955 are:
∙On instruments with internal pumps, the pump is now configured for use with 110 VAC, 60 Hz vs. 220 VAC, 50 Hz operation by a set of configuration jumpers on the Relay PCA. Previously a set of inline connectors and wiring harnesses performed this function.
∙The configurability of the two thermocouple inputs has been expanded to allow for both grounded and ungrounded thermocouples
∙A retainer plate has been added to the 045230200 version to keep the solid state AC power relays securely inserted in their sockets.
∙Because the board has been physically changes, locations of components such as jumper blocks, connectors and status LED’s have changed.
1.3. Relay PCA Location and Layout
Generally the relay PCA is located in the
Thermocouple | Status LED’s |
Signal Output | (D2 through D16) |
(JP5) |
|
Thermocouple |
|
Configuration |
|
Jumpers |
|
(J15) |
|
TC1 Input |
|
(J16) |
|
TC2 Input |
|
(JP7) |
|
Pump AC |
|
Configuration |
|
Jumper |
|
Watchdog | DC Power Supply |
Status LED (D1) | Test Points |
I2C Connector
Power
Connection
for DC
Heaters
Shutter Control
Connector
(M100E Series
Only)
Valve Control
Pump Power |
Output |
AC Power |
IN |
AC Heater |
Power Output |
Solid State AC Power Relays
(JP6)
Drivers
Valve Option
Control
Connector
DC Power
Distribution
Connectors
(Not Present on
P/N 45230100)(JP2)
AC Configuration Jumpers
for Optional IZS Valve
Heaters & 02Sensors
Main AC Heater
Configuration Jumpers
AC Power Output for Optional IZS Valve Heaters & 02 sensors
Figure 1-1: Relay PCA Layout (P/N04523)
2 | 05118 Rev B3 |
