Electrical Parameters Of The Setpoint Signal; Electrical Parameters Of The Relay Contacts - Siemens SIMATIC S7-300 Manual

Signals One voltage signal and one enable signal are provided.
Signal parameters The setpoint is output as an analog differential signal.
Table 4-3
Rated voltage range
Output current
Relay contacts
The axis enables are switched via relay outputs ("make" contacts).
Table 4-4
Switching voltage
Switching current
Switching capacity
Connecting cables Acceptable length: up to 35 m (115 ft)
to drive unit
FM 354 Servo Drive Positioning Module
SETPOINT (SW)
An analog voltage signal in the range
point.
REFERENCE SIGNAL (BS)
A reference potential (analog ground) for the setpoint signal, internally
connected with the logic ground.
SERVO ENABLE (RF)
A relay contact pair used to switch the axis-specific enables of the power
section, for example of a SIMODRIVE drive unit. The FM 354 activates
this signal when cyclic control operation is begun - in other words, when
power-up and parameterization have been completed.

Electrical parameters of the setpoint signal

Parameters

Electrical parameters of the relay contacts

Parameters
Wiring the FM 354
10 V, for output of an rpm set-
Min Max
–10 10
–3 3
Max
50
1
30
Unit
V
mA
Unit
V
A
VA
4-5