Figure 4.5 - Controlled-Voltage/Controlled-Current Mode Setting; Figure 4.6 - Compensation Setting; Figure 4.7 - Run Mode/Stop Mode On Power-Up Setting - AE Techron 7224 Operator's Manual

In Controlled-Current Mode, the load is part of the
amplifier circuit, and the relationship of the load to the
amplifier is critical. For proper and safe operation in
Controlled-Current mode, you must obverve the follow-
ing guidelines:
1. Properly attach a load before operating the
amplifier.
2. DO NOT use a blocking capacitor. The load must
have a DC path.
3. Never leave the load open. If you feel the load must
be fused, which could lead to a potential open circuit,
please contact AE Techron Application Engineering
department.
4.2.3 Controlled-Voltage/
Controlled-Current Mode Setting
To allow the 7224 amplifier's output voltage to be
controlled by its input voltage signal, place jumper
J4 in the Right position. To allow the 7224 ampli-
fier's output current to be controlled by its input
voltage signal, place jumper J4 in the Left posi-
tion. See Figure 4.5. For more information on
Controlled-Current operation, see the "Applica-
tions" section of this manual.
4.2.4 Compensation Setting
(Controlled-Current Mode)
When the 7224 amplifier is used in Controlled-
Current mode, the current control loop is tuned
with one of two available RC networks. Place
jumper J5 in the Up position to select CC1 net-
work. Place jumper J5 in the Down position to
select CC2 network. See Figure 4.6. For more
information on Controlled-Current operation, see
the "Applications" section of this manual.
4.2.5 Run Mode/Stop Mode on
Power-Up Setting
The 7224 amplifier will power-up to Run Mode
when jumper J11 is in the Left position (default
setting). To cause the 7224 amplifier to enter Stop
Mode on power-up, place jumper J11 in the Right
position. See Figure 4.7.
20
4. Check to make sure the load has some inductive
component.
5. Provide appropriate Compenation for the load.
6. If oscillation occurs, turn of the amplifier immediately.
Failure to follow these guidelines may result
in damage to the amplifier or load.
Information subject to change
7224 OPERATOR'S MANUAL – SECTION 4
Figure 4.5 – Controlled-Voltage/
Controlled-Current Mode Setting
Figure 4.6 – Compensation Setting
Figure 4.7 – Run Mode/Stop Mode
on Power-Up Setting
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