Siemens 6SR41 series Product User Manual page 90

Product Description
5.3 Cabinet Details
*
Note
Given the amperage rating of the components used in the Coordinated Input Protection
Scheme, an additional customer pilot relay may be required.
Terminal Blocks
The core drive uses 8mm 600 V terminal blocks for auxiliary input three-phase voltage
(TB4). These terminals accept #8 - #22 AWG wire.
The control terminal blocks (TB1, TB2, TB2 ELV) accept #12 - #22 AWG wire.
Note
Only a small amount of spare terminals are available for custom engineering use.
Control Door
The Control Section includes the components mounted on the control door (see Figure
"Control Door"). The operation of the keypad, KP1, is described in the
A1A9001588
The door port can be used for debugging or uploading/downloading information to/from the
NXG II controller. An Ethernet port is included on the front door. Ethernet Modbus is
available on the SBC, depending on what communications networks are selected for
Network 1 and 2 (see
SW1 is a Mode Select switch that is optionally selected as Off-Local-Remote or Off-Hand-
Auto (SW1 can also be keyed). The functionality is the same. If SW1 is in the OFF position,
the inverter output will be inhibited. If SW1 is in the Remote/Auto position, the control will use
either a Remote 4-20 mADC speed demand or Network demand, depending on how the
project SOP is written. If SW1 is not in OFF or Remote/Auto, the speed demand is set by the
Keypad operator (this is considered the Local/Hand operation).
PB4, is a red mushroom-head maintained N.C. multi-deck operator that is used for
emergency stops (E-Stop). One deck of the PB4 operator is drive power 120 V (24VDC
option available) powered, and is used in series with the CR function of the drive. IN
addition, this set of contacts is series connected to the terminal blocks, where the customer
can wire in a N.C. set of E-Stop wires (reference the "C" set of drawings) (see Figure "E-
Stop Circuits"). The YELLOW jumper must be removed from the terminal blocks located in
the I/O Section allow proper operation of the remote E-Stop wiring. When activated, the
inverter output will be inhibited immediately and the connected load will coast. A second
deck of the N.C. PB4 operator is connected to the terminal block section for use by the
customer and is a dry set of contacts. A third deck of the PB4 operator is connected in series
with the Coordinated Input Protection Scheme. Therefore, in this scenario, when PB4 is
activated at the drive, the "MV IP Breaker Enable" signal will open (some customers may
prefer Custom engineering to alter the logic of this third deck).
88
This circuit is repeated in the "C" set of drawings. Contact ratings are shown for
resistive switching.
(see Figure "Keypad" for a view of the keypad operator.)
NXG Communications Manual A1A902399
).
Operating Instructions, Version AE 12/2009, A5E01454341C
NXG Control Manual
Product User Manual