Standstill Monitor
SAFEONE DN3PS2
The SAFEONE DN3PS2 is a safety switchgear for sensorless standstill monitoring of three-phase and single-phase motors. Standstill detection is performed in the device by evaluating the EMF. The module complies with certified Performance Level e and SIL 3.
Your benefits at a glance.
Independent
Can be used regardless of provider
and system.
Space-saving
With a width of 22.5 mm, the standstill
monitor fits into any switch cabinet.
Reliable
Less prone to failure by eliminating
the encoder.
Parameterizable
Parameterization is performed using the SET button on the module.
Plug & Play
Quick and easy commissioning
without sensor wiring.
Cost-efficient
Lower costs, as no sensors need
to be installed.
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General Data
| Width | 22,5 mm |
| Switching Capacity | up to 3 A |
| In- and Outputs | 2 Relay Outputs (1 safety Contact) + 2 Diagnostic Outputs |
| Connection Terminals | Spring-loaded terminals, screw terminals |
| Certifications | PLe (EN ISO 13849-1), SIL3 (IEC 61508), SIL CL3 (IEC 62061), UL-certified |
| Hardware-Parameterisation | Yes |
| Software-Parameterisation | No |
| Motion Monitoring | without external sensor |
| Hardware-Diagnosis/LED | Yes |
| Safe Torquet OFF (STO) | Yes |
| Muting (bypass) | Yes |
Technical Data
| Protection | IP20 |
| Installation Site | any |
| Encasing Material/Type | Polyamide PA not reinforced |
| Rated insulation voltage | 250V AC |
| Surge voltage strength | 4kV |
| Surge voltage category | III |
| Measurements | B x H x T/ 22,5 x 114 x 111mm |
| Connection terminals/ Material | Plug-in spring-cage terminal blocks/ polyamide PA |
| Conductor cross-section (flexible only) | 0.25 - 2.5mm^2 with adhesive end sleeve |
| Connecting wire | 60/75°C copper |
| Conductor cross-section AWG | 24...12 |
| Wire stripping length | 8mm |
Inputs
| Operating Voltage | 24V DC -15%/+10% with reverse polarity protection |
| Current consumption at 24V DC | ≤ 80mA |
| Current consumption L1, L2, L3 | 0,35mA at 690V AC/ 5KHz |
| Input voltage L1, L2, L3 | 90 to 690V AC |
| Input voltage A1/ A2 | Type 2,8W |
| Status Indication | 4 x LED 2-colored |
| Protective circuit | Overvoltage and reverse polarity protection for operating voltage |
Outputs
| Contact design | 2 Release contacts |
| Minimum switching current | ≤ 10mA |
| Switching capacity in accordance with IEC 60947-5-1 | DC13: 3A/24V AC15: 3A/230V (not at ID-No. 33PS08) |
| Mechanical lifetime | > 20 x 10^6 Switching Cycles |
| Contact Material | AgNi |
| Contact fuse | 5 A gL/gG |
| Response time adjustable | 0.5 s – 40s |
| Outputs O1, O2 | ≤ 100mA short-circuit and overload protected, only with ID-No.: 33PS08 |
Environmental Data
| Temperature | -20 to +55°C according to DIN IEC 60068-2-3 |
| Storage Temperature | -40 to +85°C according to DIN IEC 60068-2-3 |
| Min. height |
< 2000m above Sea Level NN |
| Vibration resistance in all 3 levels |
Sinus 10-55Hz, 0.35mm, 10 cycles, 1 octave/min |
| Clearance and creepage distances |
DIN EN 50178, safe isolation |
| Minimum installation protection class | Installation in a control cabinet is mandatory |
Block diagram (terminal assignment 33PS02, 33PS03, 33PS05)

Two different function types are possible with the variants 33PS02, 33PS03, 33PS05. The function type is selected via inputs I11 and I21.
| Function 1 | Function 2 |
| I11 and I21 not connected | I11 and I21 connected |
| Standstill monitoring is constantly active. | Standstill monitoring is not active. |
| Close the enabling contacts when the drive is at a standstill. | Enable contacts are closed (with 33PS05 only the enable contact 13/14 remains closed. The enable contact 23/24 switches off on movement). |
| - | The error detection "wire breakage and "single-channel" is inactive. (not with 33PS05) |
Sample Application for Function 2

Safety Features
| STO (Safe Torque Off) | yes |
Safety parameters according to DIN EN ISO 13849-1
| Stop Category according to IEC 60204 | 0 |
| Category according to DIN EN ISO 13849 | 4 |
| Performance Level | e |
| MTTFd [a] | 77 |
| PFHd | 4E-08 |
Contact service life

Motors
- Three-phase motor with frequency converter
- Single-phase AC motors
- Motors with star-delta connection
- Servo Motors
Typical applications
- Wood processing
- Centrifuges
- Metalworking machines
- Conveyor systems and conveyor belts

