Rear Panel Definition; Rear Panel Connector Identification - Lakeshore 642 User Manual

3.2

REAR PANEL DEFINITION

This paragraph defines the rear panel of the Model 642. Refer to Table 3-1. Readers are referred to paragraphs that
contain installation instructions and connector pin-outs for each feature.
CAUTION: Verify that the Model 642 has been set up for the proper line voltages.
CAUTION: Make rear panel connections with the instrument power off.
Table 3-1 below highlights the connections to be made on the rear panel. Figure 3-1 shows the rear panel and identifies
the connectors.
VOLTAGE
1
SELECTION
CIRCUIT
2
BREAKER
3
FUSES
4
CABLE ENTRY
POWER
5
TERMINALS
MAGNET
6
CONNECTOR
AUXILIARY
7
CONNECTOR
POWER SUPPLY
8
CONNECTOR
COOLING
9
WATER
OUTPUT
10
TERMINALS
11
ANALOG I/O
12
RS-232C (DTE)
IEEE-488
13
INTERFACE
CHASSIS
14
CONNECTION
DETACHABLE
15
HANDLES
3-2
Lake Shore Model 642 Electromagnet Power Supply User's Manual
Table 3-1. Rear Panel Connector Identification
16 DIN terminals are provided behind a wiring cover to facilitate setting the correct input
voltage.
An adjustable current auto-resetting circuit breaker is provided behind a wiring cover to
protect main power circuits.
¼ A Class CC fuses (2) are provided behind a wiring cover to protect the start-up circuit.
A 34 mm (1.3 inch) hole is provided for power cable entry and strain relief bushing.
Four DIN terminals are provided behind a wiring cover for connection of power wiring.
A 4-pin detachable screw terminal block is provided to connect the optional magnet
water valve power and temperature and/or flow switch.
An 8-pin detachable screw terminal block is provided to connect the optional Emergency
Stop, Remote Fault Indicator, Remote Enable and Chassis Ground.
A 4-pin detachable screw terminal block is provided to connect the optional power
supply water valve power and/or flow switch.
Two 10 mm (3/8") hose barbs are provided for input and output of cooling water.
Two output lugs are provided for the magnet cable connections. Refer to Paragraph 3.8
and Figures 3-13 and 3-14 for connecting the magnet cables to the instrument.
A 15-pin D subminiature connector provides output for current and voltage monitoring,
as well as analog programming input. Refer to Paragraph 3.9 and see Figure 7-7.
A 9-pin D subminiature plug wired in DTE configuration is provided for use with RS-
232C serial computer interface. Refer to Paragraph 5.2.2 and see Figure 7-11.
An IEEE-488 compliant interface connector is provided for use with IEEE-488 parallel
computer interface. Refer to Paragraph 5.1 and Figure 7-12.
An earth safety chassis connection is provided to facilitate connection to the magnet
frame if noise problems exist.
Two high-strength detachable handles are provided to aid in handling and lifting.
Installation