97
The following table provides the conditions of each pin and the relay state:
Condition
Pins
Relay State
TEST
Connection between PIN 3 & PIN
5
Momentary contact
closure
RESET
Connection between PIN 2 & PIN
5
Momentary contact
closure
INTERLOCK
Connection between PIN 4 & PIN
5
Normally open
contact
Memory Input Control
Selection of up to 7 memory locations is achieved by using a Normally Open
(N.O) Momentary Button. The truth table below provides the pin locations
needed in order to select the memories.
Memory
PIN 1
PIN 9
PIN 8
M1
OFF
OFF
ON
M2
OFF
ON
OFF
M3
OFF
ON
ON
M4
ON
OFF
OFF
M5
ON
OFF
ON
M6
ON
ON
OFF
M7
ON
ON
ON
Remote Interlock
The 400XAC is equipped with a Remote Interlock feature. Remote Interlock
utilizes a set of closed contacts to enable the instrument’s output. If the Remote
Interlock contacts are open the output of the instrument will be disabled. Remote
Interlock could also be referred to as a remote system lockout, utilizing
“fail when
open” logic. If the Remote Interlock contacts are open and the TEST button is
pushed, a pop-up message will be displayed on the screen for two seconds.
If the Remote Interlock contacts are opened during a test, the pop-up message