AEG Electrolux THYRO-A Operations Instructions download pdf (Page 27)

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4.3.6 ADAPTING ANALOG OUTPUT (SCALE)

(ONLY FOR ...H RL1 AND ...H RLP1)

The scale of the analog output is adapted with potentiometer R204

SCALE OUTPUT, if, for example, the scale of the display does not

correspond to the nominal data (see page 42, Analog output).

SETTING 1A (H, HRL1, HRLP1) AT 2A (HRLP1) AT

(DEFAULT = 0-20MA, U-, I-, P DISPLAY - P DISPLAY

CORRESPONDS TO 2A (H, HRL1, HRLP1) AT POTENTIOMETER R204

TYPE VALUE (CURRENT/ U-, I DISPLAY SCALE OUTPUT

VOLTAGE/POWER) POTENTIOMETER R204

SCALE OUTPUT

Potentiometer turns 3.6 turns * (type value power 4.16 turns * (P

type power controller

(from left stop) controller/scale end value) scale end value)

Setting aid, analog output 4 mA * (type value power 4.62 mA * (P

type power controller

in mA controller/scale end value) scale end value)

(Switch S1.10 = „OFF“)

Setting aid, analog output 2 V * (type value power 2.13 V * (P

type power controller

in volts controller/scale end value) scale end value)

(Switch S1.10 = „ON“)

TAB. 6A ANALOG OUTPUT (SCALE) THYRO-A 1A, 2A

SETTING 3A (H, HRL1) AT 3A (HRLP1) AT

(DEFAULT = 0-20MA, U-, I DISPLAY - P DISPLAY *

CORRESPONDS TO POTENTIOMETER R204 POTENTIOMETER R204

TYPE VALUE (CURRENT/ SCALE OUTPUT SCALE OUTPUT

VOLTAGE/POWER)

Potentiometer turns 3.6 turns * (type value power 6.24 turns * (P

type power controller

(from left stop) controller/scale end value) scale end value)

Setting aid, analog output 4 mA * (type value power 6.93 mA * (P

type power controller

in mA controller/scale end value) scale end value)

(Switch S1.10 = „OFF“)

Setting aid, analog output 2 V * (type value power 3.46 V * (P

type power controller

in volts controller/scale end value) scale end value)

(Switch S1.10 = „ON“)

TAB. 6B ANALOG OUTPUT (SCALE) THYRO-A 3 A

Analog output: X2.9 (+); X2.5 (ground) *

only with ...H RLP1

Example adaptation at the analog output

Thyro-A 3A 400-30 H RLP1 (U

type

= 400 V, I

type

= 30 A, P

type

= 20.7 kW)

Measuring instrument for 4-20 mA with scale 20 kW

SETTING AID

Setting R204: 6.24 * (20.7 kW/20 kW) 6.5 turns

(from left stop)

Setting aid in mA: 6.93 mA * (20.7 kW/20 kW) 7.17 mA

Setting aid in V: 3.46 V * (20.7 kW/20 kW) 3.58 V

4.3.7 SETTING LOAD MONITORING

(UNDERCURRENT MONITORING)

(only for ...H RL1 and ...H RLP1)

This function enables a freely selectable absolute current limit to be

monitored. The value can be set using the R205 potentiometer or the

Thyro-Tool Family. During the configuration process via potentiometer

the monitoring value will be indicated at the analog output. This moni-

toring of absolute values is suitable for one or several load resistors set

up in parallel. Basically the effective value of the current measured is

continually compared with a configurable absolute current limit for

undercurrent.

If it drops below this limit message is sent. In the case of resistors

set up in parallel, by setting the respective undercurrent limit can be

selected a partial load break.

• Set load monitoring on the potentiometer R205 LOAD FAULT. The

default setting of this monitoring is OFF (=left stop of the potentio-

meter R205).

A measuring instrument connected to the analog output can be used

as setting aid (see page 43, Potentiometer). If the actual value is fallen

below the set value, a message is sent (LED, by bus and fault signalling

relay K1).

NOTE

Remarks on settings / tables

- Settings over 90% and fewer than 10% not make sense. If the load

currents are considerably less than the nominal currents of the power

controller, consider using a smaller power controller.

- In operating mode VAR, monitoring is blocked for large control angles

(for load with neutral conductor a>140°el., for load without neutral

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AEG Electrolux THYRO-A Operations Instructions Page 27

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