Name And Use Of Inputs And Outputs; Use When Shipped; Device Operation; Default Application Wiring Diagram - Danfoss MCB140 Original Operating Instructions

2.5. Name and use of inputs and outputs

Name
SS1_1/2 Safe Stop 1
SLS_1/2 Safe Limited Speed
Door_1/2
Pr_1 Proximity switch 1
Pr_2 Proximity switch 21
FBC Feedback contactor
Table 1: Safety inputs
Name Use
Ramp Tripping of ramp signal for controlled drive shutdown
STO_O Tripping of instantaneous STO (Safe Torque Off in accordance with EN IEC 61800-
5-2)
ExC Control of contactor to drive energy isolator
SSO Enabling of protective interlock
Pout_1/2 24 V voltage sources with channel-based test cycles
Table 2: Safety outputs
Name
Configurable multi-
function output
DIAG
Table 3: Diagnostic output
SS1 must be used.
Pr_1, Pr_2, SLS, Door, FBC and the DIAG diagnostic output can be optionally used.

3. Use when shipped

3.1.

Device operation

If the DEFAULT parameters are retained, then all inputs/outputs and all safety operations are enabled. The
following features must be taken into account:
All input signals comply with the fail-safe principle (NC contact type)
-
- All inputs must be used in dual channel format
All inputs and outputs must be monitored for crossovers and short circuits
-
- Drive speed detection is enabled. Appropriate speed sensors must be mounted
- The outputs are force-sampled by way of low-active test pulses (duration approx. 1ms).
3.2.

DEFAULT application wiring diagram

Figure 2 shows the layout and wiring diagram. Contact-based signallers with NC operation must be used. The
opening of the contact or wire break trips the safety operation assigned to the respective input.
The clocked voltages of the Pout_1/2 outputs must be used to operate the input crossover test. The channel
assignment must be observed.
The supply voltage of the proximity switch must be provided externally for speed detection purposes.
3.3.

Speed detection

The signals are generated by 2 or 3-wire proximity switches. The mechanical condition of the motor shaft is key to
selecting the proximity switch. When mounting, efforts must be made to ensure that at least one switch provides a
high signal when stationary.
Safety technology: MCB14x
Use
Tripping of Safe Stop 1 (in accordance with EN IEC 61800-5-2)
Enabling of monitoring of derated maximum speed (safely derated
velocity in accordance with EN IEC 61800-5-2)
Mode feedback of protective interlock
Speed detection in dual channel or Start/Stop in single channel
operation
Speed detection in single channel and dual channel operation
Mode feedback of energy isolator
Output type Use
Binary Faults
Stop
Analog Equivalent speed constant current 4-20mA
Equivalent speed constant voltage 2-10V
Document No.: MG34Y104
Rev.: 06 23 October 2012 Page 8 of 25