Block Diagrams; Indicators; Approvals And Markings; Applications - Dold SAFEMASTER BH 5904.02/00MF2 Betriebsanleitung

Safety Technique
SAFEMASTER
Valve Monitoring Module
BH 5904.02/00MF2

Block Diagrams

A1+ A2 S11 S12 S14 S13 S21 S22 S24 S23
PTC
monitoring
logic 1
galvanic
separation
K1 K1 run1
48

Indicators

Green LED's K1, K2: On, when relays K1 and K2 are energized.
Yellow LED run1: On continuously, when no fault and the
valve is in initial position.
Off, when no fault and the valve is in end
position.
Indicates faults by different flashing
sequences (see flashing codes for fault
indication).
Yellow run2: On continuously, when no fault.
Indicates internal faults by different flashing
sequences (see flashing codes for fault
indication).
48
+24Volt
Output
48 and 58: 0 Volt
+24Volt
0 Volt
All technical data in this list relate to the state at the moment of edition. We reserve the right for
technical improvements and changes at any time.
S31 S32 S34 S33 S41 S42
galvanic separation
K1
monitoring
logic 2
K2
galvanic
separation
K2 K2 run2
58
58
No fault or feed back
+24Volt
circuit open
Other fault then valve
0 Volt failure or feed back circuit
open
0 Volt Starting failure of valve
+24Volt Reset failure of valve
• According to
- Performance Level (PL) e and category 4 to EN ISO 13849-1
- SIL Claimed Level (SIL CL) 3 to IEC/EN 62061
- Safety Integrity Level (SIL 3) to IEC/EN 61508
• Way of valve monitoring adjustable (2 NC, 2NO, 1 changeover
contact)
• Reset button to acknowledge after fault detection
• Available with continuous monitoring of the valve or just with one
check per cycle
• Contact reinforcement by external contactors possible
• Short circuit and cross fault detection
• Broken wire detection
• Outputs: 2 NO contacts
• 2 semiconductor outputs with short circuit, overload and
temperature protection to monitor the status
• Under and overvoltage detection
• Reaction time: max. 28 ms
• LED operation indicators (run1, run2 )
• Width 45 mm
13 23

Approvals and Markings

* see variants

Applications

• Protection of people and machines.
The module BH 5904 monitors the positions of valve lifter in standard
hydraulic blocks for presses.

Function

14 24
M8519_a
The module BH 5904 monitors the position of the valve at the beginning
of a machine cycle by checking a position sensor. The output contacts are
only activated if on start signal from the safety controller the valve is in it´s
initial position, the feed back circuit from the safety controller is closed and
no fault is stored.
The output contacts are deactivated or cannot be activated again, when
after an adjustable time delay the valve position does not correspond to
the start signal.
Two types of machine cycles can be selected:
• The cycle ends when feed back circuit of the safety controller is
interrupted. The valve will only be monitored when switching the
start signal for the first time.
• The cycle ends when switching off the start signal by the safety
controller. In this case the valve will be monitored continuously.
Because of the potential free inputs it is possible to connect as many
modules BH 5904 as required, which monitor different valves to the same
feed back circuit.
19
*
Canada / USA
BH 5904.02/00MF2 / 26.01.21 en / 306A