Operating instructions

Installation
36 Feed/Feed-Back Units BUC 624, 625
5.96024.06a Baumüller Nürnberg GmbH
5.6 Pin assignments
5.6.1 Power terminals
y 1U1, 1V1, 1W1, PE
1U1, 1V1, 1W1: Unit input voltage 400 V
AC
PE: Control cabinet ground
M 6 terminals
y ZK+, ZK-
Terminal for connecting the BUS 62x Power modules to the DC link of the feed unit via the current
rails supplied with the BUS 62x power modules.
M 6 terminals.
If UL508C has to be observed: Nominal tightening torque of the terminal screws: 4 Nm resp. 35,4
pound-inches.
y X1 on the top of the unit (refer to connection plan)
X1:1, X1:2, X1:3: connection voltage 400 V
AC
2U1, 2V1, 2W1 Push-on terminal strip connection for charging circuit
X1:4, X1:5 Enable main contactor contact, can be loaded with a maximum of
230 VAC and 1 A
Connect push-on terminal strip
If UL508C has to be observed: Use 60°C / 75° C copper con-
ductors only (UL508C, Nov 27, 1996, Tab. 39.2).
Nominal tightening torque of the terminal screws: 4 Nm resp.
35,4 pound-inches.
To observe UL 508C, Nov 27, 1996, section. 35.9 it is imperative
to connect a overvoltage protector on the mains side.
Use UL-listed varistors with an operating voltage of 550V
eff
and
a continous power of at least 1W for example SIOV-S20K550,
SIEMENS (Baumüller no. 3.19005301)
NOTE
Longer lines are not allowed, since otherwise there is a risk of destroying the device!
Only a limited number of power modules may be attached to the BUC 62x
BUC 624: max. 3 power modules
BUC 625: max. 5 power modules