Entron EN1000 series, Инструкция по установке и эксплуатации

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Page 58
5.4.14 CONSTANT CURRENT MODES
-
[
.!X!
]
(
EN1001 only
)
This parameter is used to select desired constant current mode and to select current sensor.
The EN1001 Constant Current control can be programmed for constant current operation
and two basic modes:
1. Compensation ( both monitoring and compensation),
2. Monitoring (no compensation, only monitoring).
Constant Current operation is possible with three different types of current sensors:
• Primary sensing with Current Transformer.
• Secondary sensing with non-calibrated Hall Effect Sensors.
• Secondary sensing with calibrated Rogowski Coil.
To program the control for CONSTANT CURRENT operation:
1. Put the control in PROGRAM MODE.
2. Use SELECT to find [
01
].
3. Use the SCHEDULE push-buttons to find [
.!X!
].
4. Use the DATA push-buttons to enter one of the desired constant current modes from
Table 5.4.14.
5. Press the ENTER push-button.
Table 5.4.14 Constant Current modes
[
.!X!
]
CONSTANT CURRENT MODE RANGE
00 disabled CONSTANT CURRENT --- ---
primary Current Transformer: PT2, PT5, PT10, or PT20
10 Primary Compensation any max. range
11 Primary Monitoring any max. range
12 Primary Compensation PT2 ratio 200 A
13 Primary Monitoring PT2 ratio 200 A
14 Primary Compensation PT5 ratio 500 A
15 Primary Monitoring PT5 ratio 500 A
16 Primary Compensation PT10 ratio 1000 A
17 Primary Monitoring PT10 ratio 1000 A
Hall-Effect secondary Current Sensor
20 Secondary Compensation max. range 100 kA
21 Secondary Monitoring max. range 100 kA
secondary Rogowski Coil: S6 or S10
30 Secondary Compensation max. range up to 100 kA
31 Secondary Monitoring max. range up to 100 kA
32 Secondary Compensation desired range 2 kA to 100 kA
33 Secondary Monitoring desired range 2 kA to 100 kA
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