Siemens SITRANS WW100 Operating Instructions Manual page 20

Installing
4.2 Electrical installation for servo driven models
Emerg. Stop Ch 1.
Emerg. Stop Ch 2.
Manual Mode:
Automatic Mode:
Resolution of the Analog Input
This is extremely important when determining the maximum speed of the weighfeeder. Set
P2000 according to the calculated results or within 15% of this value. This will optimize the
resolution of the analog control signal. The better the resolution, the better the control function
for maintaining Rate, Load, or Speed.
You may also consider increasing the RPM (Design Speed) of the drive. Depending on the
setup of the application, maximum speed vs. maximum loading, this will accommodate material
shortages in a shearing application and allow for infrequent increases in speed to maintain a
programmed Rate or Load.
Emergency Stop Wiring Overview
As detailed in the electrical schematics, the Emergency Stop circuit is a critical component of
the drive and its operating state. The Sinamics S110 Drive has built-in Safety Integrated
Functions. When wired correctly, this circuit functions as a Category 3 safety stop for the drive
and corresponding motor. At the same time, the circuit performs an additional dual purpose
function for the application.
Second
20
Label
Hand DI 0 (X121.1)
Off - - - - - - - - -
Automatic DI 1 (X121.2)
DCS Enable DI 2 (X121.3)
Stop DI 3 (X121.4)
Start DI 8 (X121.7)
DI 16 (X120.3)
DI 17- (X120.5)
Requires only the Hand input HIGH and an analog reference signal.
Requires the Automatic and DCS enable inputs HIGH and an analog reference signal.
First The drive realizes a change in state of the dual channel input. If either of these
inputs are lost, the drive brings the motor shaft to a controlled stop via the Safe
Torque Off mode.
The purpose of the dual channel input is to monitor both the Positive and Com‐
mon channel of the DC power source. In turn, the dual channel digital output of
F-DO 0(16) is wired in series to the corresponding control relays (refer to sche‐
matics) which function as a cutout of the Mains Power in the event of an Emer‐
gency Stop situation.
Input
Manual Mode, Local Operation only. Potentiometer
Control.
Not connected. No Mode signal present!
For DCS or PLC Master Control.
Required for DCS or PLC Master Control.
Maintained Active High Input.
Momentary Low to High Input to set RS Flip Flop.
Required Active HIGH Input for Motor Control
Required Active HIGH Input for Motor Control
Operating Instructions, 06/2018, A5E33560618-AC
Description
SITRANS WW100