MR TRAFOGUARD ISM, Руководство по эксплуатации

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6 Functions and settings
Maschinenfabrik Reinhausen GmbH 2016 108 5163667/00 EN TRAFOGUARD® ISM®
Setting Meaning
Standard The device issues a signal via the Raise output to in-
crease the voltage.
The device issues a signal via the
Lower output to re-
duce the voltage.
Swapped The device issues a signal via the Lower output to in-
crease the voltage.
The device issues a signal via the
Raise output to re-
duce the voltage.
Table 24: Behavior
To set the switching direction, proceed as follows:
1.
Go to Settings > Parameters > Motor control > Switching direction .
2. Select the option you want.
3. Press the Accept button to save the modified parameter.
Parallel operation (optional)
In the Parallel operation menu item, you can set the parameters needed for
parallel transformer operation. Parallel transformer operation is used to in-
crease the throughput capacity or short-circuit capacity in one place.
Compliance with the following general conditions is required for operating
transformers in parallel:
▪
Identical rated voltages
▪ Transformer power ratio (< 3 : 1)
▪ Maximum deviation of short-circuit voltages (U
K
) for transformers con-
nected in parallel < 10%
▪ Same number of switching groups
▪ The same current-transformer connection has to be used for all devices
running in parallel
You can control up to 16 transformers connected in parallel in one or 2
groups without detecting the system topology. Information is swapped be-
tween the voltage regulators operating in parallel using the CAN bus. Paral-
lel operation is activated using one of 2 status inputs or the control system.
The device supports parallel operation following the methods described be-
low:
▪
Parallel operation following the "Circulating reactive current minimiza-
tion" principle
▪ Parallel operation following the "Tap synchronization" (master/follower)
principle
You must select the same parallel operation method (circulating reactive
current minimization or tap synchronization) for all voltage regulators oper-
ating in parallel. Otherwise you cannot operate the devices in parallel.
6.6
Conditions for parallel
operation
Parallel operation method