ABB DCS600 Thyristor Power Converters DC Drive Systems 25 to 5150 A MultiDrive

ABB DCS600 Thyristor Power Converters  DC Drive Systems 25 to 5150 A  MultiDrive

This chapter contains safety instructions which must be complied

with during installation, operation and maintenance of the power

converters series DCS 600 MultiDrive. If these instructions are

not complied with, this may result in injuries (perhaps even with

fatal) or in damage to the power converter, the motor and the

driven machine. Before starting with any work whatsoever at or

with this unit, you must read the information given in this chapter.

• Motor voltage UA when the following units are used

DCS 601: UAmax = Line voltage * 1.16 (2- quadrant unit)

DCS 602: UAmax = Line voltage * 1.05 (4- quadrant unit)

• Field voltage UF (= max. output voltage) when the following is being used

SDCS-FEX-1: UF = Line voltage * 0.9

If there is a divergence of more than 10 % between the field supply unit’s output

voltage and the rated field voltage UFrated stated on the motor’s rating plate, then the

connecting voltage UN should be reduced, using a matching transformer or a series

resistor Rv: Rv = (0.9 * UN - UF) / IF IF = Rated field current

(Note: also suitable for fine-balancing the maximum motor voltage)

• Field voltage UF when the following is being used

SDCS-FEX-2 /

DCF 503 / DCF 504: UF = Line voltage * 0.6 ... 0.8

• Field voltage UF when the following is being used

DCF 601: UF = Line voltage * 0.5 ... 1.1

Maximally possible output voltage UAmax using

DCF 601 / DCF 602: UAmax = Line voltage * 1.35

Warnings Warnings provide information on states which if the specified

procedure for the state concerned is not meticulously complied

with may result in a serious error, in major damage to the unit, in

injury to persons and even in death.

They are identified by the following symbols:

 All electrical installation and maintenance work on the thyristor

power converter must be carried out by properly qualified staff

who have been thoroughly trained in electrical engineering.

 The thyristor power converter and its adjacent units must be

properly earthed by qualified professionals.

 You must NEVER perform any work on the thyristor power

converter while it is still switched on. First switch the unit off,

use a measuring instrument to make absolutely sure that the

power converter has really been de-energized, and only then

you may start with the work concerned.

 Due to external control circuits, there may be dangerously

high voltages present at the thyristor power converter even

after the line voltage has been switched off. So always work

at the unit with appropriate caution! Non-compliance with these

instructions may result in injury (or even death!).

 When thyristor power converters are in use, the electric motors,

power transmission elements and the driven machines are

working in an extended operating range, which means they have

to cope with a relatively high loading.

 You should have made sure that all units, devices and appliances

used are actually suitable for this higher loading.

 If you have to operate the thyristor power converter at a rated

motor voltage and/or a rated motor current significantly below

the figures stated in the thyristor power converter’s output data,

you must take appropriate precautionary measures to protect

the unit against overspeed, overload, breakage, etc., by modifying

the software or hardware appropriately.

 For insulation testing, you must disconnect all cables from the

thyristor power converter. You should avoid operating your unit

at values other than the rated data. Non-compliance with these

instructions may cause lasting damage to the thyristor power

converter.

 The thyristor power converter possesses a number of automatic

reset functions. When these functions are executed, the unit will

be reset after an error and will then resume operation. These

functions should not be used if other units and devices are not

suitable for an operating mode of this kind, or if their use might

entail dangerous situations.