Dynasonics MFX Series Insertion MagProbe Flow Meter - Manual (Page 20)

Rev. 01/11 -1.18- MFX
Control Relay Two independent SPDT (single-pole, double-throw) Form C relays
are contained in this module. The relay operations are user
configured via software to act in either a flow rate alarm, signal
strength alarm or totalizer/batching mode. The relays are rated for
200 Vac maximum and have a current rating of 0.5 A resistive load
(175 Vdc @ 0.25 A resistive). It is highly recommended that a
secondary relay be utilized whenever the Control Relay ISO-MOD is
used to control inductive loads such as solenoids and motors.
Typical relay connections are illustrated in Figure 1.12A. The reed
relays located within the relay module can interface directly with
small pilot lights, PLCs, electronic counters and SCADA systems.
Figure 1.12B describes the connection of an external power relay to
the Relay ISO-MOD. It is recommended that external power relays
are utilized whenever the load to be switched exceeds the switch
rating of the reed relays, or if the load is inductive in nature.
PART 1 - ISO-MOD
Figure 1.12A
Typical Relay
Connections
Figure 1.12B
Slave Relay
Connections
POWER
SOURCE