Bench Top User’s Manual
Operation
6.3 Preparation of Operation
6.3.1 How to Use the Controlled Specimen Power Terminal and the
Time Signal Output Terminals.
All the external terminals are equipped on the left side of the
chamber.
The controlled specimen power terminal should be used when
testing heat generating specimens. This is suggested
because if one of the safety devices is activated, the chamber
and specimen power will be disrupted, and no damage will
occur to either the chamber or the specimen.
The time signal output terminals relay the time signal of the
temperature digital programmable controller to an outside
source.
The following applies to the controlled specimen power
terminal:
It is extremely dangerous to stop
operation of the chamber while
supplying electricity to specimens,
therefore a protection circuit must be used to ensure
the safety of all personnel.
Controlled Specimen Power Terminal
The circuit is in a connected state during normal operation of
the chamber. When a chamber safety device is activated,
power is turned “OFF”, or in case of power failure, the
terminal assumes an open state.
Time Signal 1
When the chamber is operating normally in the program
mode, the terminals are closed whenever the controller is
programmed to turn Time Signal 1 ON. If the temperature
digital programmable controller alarm activates, the terminals
change to an open state. If power is turned off by switching
the Run Switch to the OFF position, Time Signal 1 remains
energized. Time Signal 1 corresponds to the digital output 1
menu of the temperature digital programmable controller.
The rated electrical capacity of the specimen power is 2A 125VAC. The
capacity of the time signal is 2A 125VAC. Verify that the total for the
devices connected do not exceed the circuit limits. For loads higher than
the limits, a relay or CONTACTOR must be used. Fusing of the circuit is the
customer’s responsibility.
125VAC 2A
Specimen
Power
Connector
125VAC 2A
Time
Signal 1
Connector
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