Rotational Direction Monitor SAFEONE DN3PR1

The rotational direction monitor DN3PR1 does not require a measuring system nor external sensors and are therefore unique on the market in this way.

Thus, the innovative DN3PR1 is a good choice for retrofits as well as the most modern machines up to Performance Level e.

No sensor necessary

No parameterisation necessary

Fits every switch cabinet

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Safe direction monitoring easier than ever.

For safe monitoring of three-phase asynchronous motors up to 690V AC with Performance Level e, it is not even necessary to parameterise the device. The relay contacts remain closed in the desired direction of rotation. If the direction of rotation is incorrect, the relay contacts open.

8-1 9-3 10-3 11-3 12-2 13-1 14-1

General Data

Operational Voltage UB	24 V DC (-15/+10%)
Power consumption at 24V	80 mA
Power input at A1/A2	1,9 W
Protection (Case and Terminals)	IP20
Protection (Installation Site)	min. IP 54
Clearance and creepage distances between circuits	according to DIN EN 50178
Rated insulation voltage	400V AC to Ground 690V AC Phase to Phase
Rated impulse voltage / insulation	Basic insulation 6kV: between all current paths and enclosure Safe separation, reinforced insulation 8kV: between U, V, W and A1, A2, O1, O2, Q between U, V, W and 13/14, 23/24
Degree of contamination	2
Surge voltage category	III
Encasing material	Polyamide PA unreinforced
Measurement	422,5 x 114 x 111 mm (0.886 x 4.488 x 4.370 in)

Input Data

Digital Inputs	1 safety-related input Q
Input voltage	24V DC (-15/+10%)
Inrush current	< 5,0 mA
Power consumption	typ. 4 mA (at UB)
Measurement Inputs	U, V, W
Input voltage	90V AC to 480V AC (Phase vs. Phase)
Power consumption	0,24mA at 480V AC
Cut-off frequency	1200Hz
Rotational direction detection	>5Hz to 100Hz, two signalling periods
Min. PWM	1kHz

Output Data

Signal outputs	O1, O2 not safety-related
Voltage	UB – 1V
Max. switching current	≤ 100mA, short-circuit and overload proof
Contact outputs	13/14, 23/24
Contact Material	AgSnO2
Switching Voltage	24V DC / 230V AC
Min. Switching Voltage	3 mA/ 24V DC
Max. Switching Voltage	6A / 24V DC / 230V AC
Short-circuit resistance	1000A SCPD 6A gL/gG
Mechanical service life	10^7 Schaltspiele
Response time	2 x (period duration (reciprocal of frequency) + max. 1ms evaluation time) + max. 10ms relay response time
Process safety time	1,8 s
Output fuse	6 A gL/gG
B10d Values according to DIN EN 61810-2- 1, 01.2012	AC15: 5A/230V AC, >2x10⁵ switching cycles AC1: 6A/230V AC, >2x10⁵ switching cycles DC13: 4A/24V DC, >3x10⁵ switching cycles DC1: 6A/ 24V DC, >7x10⁶ switching cycles

Environmental Data

Operating Temperature	-20°C to +55°C
Storage Temperature	-40 °C to +85 °C
Max. Height for operating device	< 2000m above sea level
Vibration	10–150Hz, 1g
Shock resistance	15g

Block circuit diagram

Sample Application

Measurement Inputs	The Measurement inputs U, V, W of the DN3PR1 are directly connected to the three phases of the motor M.
Safe Switch Off	When the DN3PR1 detects a change of direction, the enabling current paths current paths 13/14, 23/24 open and switch off the motor in a safety-oriented manner, resetting the safety function
Resetting the safety function	The S1 acknowledgement button is used to reset the safety function after the motor has turned in the preferred direction again the motor rotates in the preferred direction again.
Monitoring of external Contactors	The external, positively-driven contactors K1, K2 are integrated into the start circuit of the of the safety switchgear.

Bildschirmfoto 2022-10-18 um 09.43.16

Safety-relevant Parameters according to ISO 13849-1

Utilisation Category	PFHd (h)	MTTFd (a)	DCavg
6A DC1 2 Operations/h	4,91 x 10^-9	471	99%
4A DC13 2 Operations/h	1,19 x 10^-8	203	99%
6A AC1 2 Operations/h	1,16 x 10^-8	157	99%
5A AC15 2 Operations/h	1,87 x 10^-8	157	99%