I/O Specifications; Example Design Of External Emergency Lamp - Agilent Technologies 4072A Advanced Pre-Installation Manual

I/O specifications

There are five I/O interface points in the power distribution unit (PDU). The I/O specifications for these interfaces
are as follows:
Instruments power outlets
DVM and CMU power outlets
(200/208 V option only)
Controller power outlets
Ext control
Ext alarm 1 and 2

Example design of external emergency lamp

The procedure below describes how to implement an external lamp (using the External alarm terminals on the
PDU) that turns on when the EMO switch is pressed.
Refer to Figure 2-21 and connect the Ext alarm 2 terminals (normally open) to an emergency lamp as follows:
1. Connect the NEUTRAL (or LINE) side of the power line outlet to a terminal of the emergency lamp.
2. Connect the LINE side of the power outlet to one terminal of the Ext alarm 2.
3. Connect the other terminal of the Ext alarm 2 to the other terminal of the emergency lamp.
Note that you must not use a power line outlet from the system cabinet because power to these outlets stops when
the EMO switch is pressed.
Figure 2-21 Example design of external emergency lamp
EMO switch
Chapter 2
Agilent 4072/4073 Preinstallation Guide, Edition 4
Maximum current: 6 A for each outlet, Total current: 8A
Maximum current: 2 A for each outlet, Total current: 2A
Maximum current: 6 A for each outlet, Total current: 6A
Steady current: 56 ± 11.2 mA (50 Hz); 50 ± 10 mA (60 Hz) at 24 V
Transient current: 2 - 3 times that of the steady current
Maximum current: 3 A at 250 V
Emergency lamp
Outlet
To Ext. alarm 2 terminal
Site Preparation
Emergency Off (EMO) System
, 2 A at 30 V
AC DC
AC
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