YSI IQ SensorNet MIQ/R6 Module - Manual (Page 12)

Installation MIQ/R6
3 - 4 ba76031e01 01/2012
3.4 Connections to the relay outputs
Warning
If external electrical circuits that are subject to the danger of
physical contact are incorrectly connected to the relay contacts,
there may be a danger of life threatening electric shock. Electrical
circuits are regarded to be subject to the danger of physical
contact when there are voltages higher than the Safety Extra Low
Voltage (SELV).
Pay attention to the following points during installation:

Electrical circuits subject to the danger of physical contact
must only be connected by a qualified electrician.
 Electrical circuits subject to the danger of physical contact
must only be connected when they are voltage-free.
 The terminal strip of the MIQ/R6 output module has two
segments for relay outputs with three relay connections each
(R1-R3 and R4-R6).
If electrical circuits subject to the danger of physical contact
are switched with a relay, no circuit that is not subject to this
danger (e. g. the MIQ/CHV module) may be operated in the
same output segment of the MIQ/R6. For such applications use
the second output segment of the MIQ/R6.

Switching voltages and switching currents on the relay
contacts must not exceed the values specified in chapter 6
T
ECHNICAL DATA . Protect electrical circuits against currents that
are too high with an electrical fuse.

Only single-phase consumers can be switched with the relays.
Under no circumstances must multiphase consumers be
switched with the aid of several relays (example three-phase
current driven pumps). Always switch multiphase consumers
via a protective relay.
 The MIQ/R6 may only be opened after the installation if all
external voltages have been previously switched off.
Materials required

Wire end sleeves, suitable for the connecting wires, with suitable
crimping tool
 4 x cable gland with sealing ring (scope of delivery MIQ/R6)
Tools  Cable stripping knife
 Wire stripper
 Phillips screw driver
 Small screw driver