Fema DWR Série Instructions De Montage Et De Service page 33

1.5.1 Maximum pressure limitation
with external interlock
When the interlock circuit shown above is used, the requirements according to DIN 57116/VDE 0116
are fulfilled if the electrical plant, such as contactors or relays, correspond to the external interlock
circuit VDE 0660 or VDE 0435 respectively.
DWR = pressure monitor
T1 = STOP
T2 = START
S = signal
(as required)
K1 = relay with
self-hold
Safety
circuit
1.5.2 Minimum pressure limitation
with external interlock
DWR = pressure monitor
T1 = STOP
T2 = START
S = signal
(as required)
K1 = relay with
self-hold
Safety
circuit
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