Hach sc200, User Manual

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Table 1 AC power wiring information (AC powered models only)
Terminal Description
Color ² North
America
Color ² EU
1 Hot (L1) Black Brown
2 Neutral (N) White Blue
— Protective Earth (PE)
Ground lug Green Green with yellow
stripe
Table 2 DC power wiring information (DC powered models only)
Terminal Description
Color ² North
America
Color ² EU
1 +24 VDC Red Red
2 24 VDC return Black Black
— Protective Earth (PE)
Ground lug Green Green with yellow
stripe
Alarms and relays
The controller is equipped with four unpowered, single pole relays rated
100-250 VAC, 50/60 Hz, 5 amp resistive maximum. Contacts are rated
250 VAC, 5 amp resistive maximum for the AC powered controller and
24 VDC, 5A resistive maximum for the DC powered controller. The
relays are not rated for inductive loads.
Wiring relays
W A R N I N G
Potential Electrocution Hazard. Always disconnect power to the
instrument when making electrical connections.
W A R N I N G
Potential fire hazard. The relay contacts are rated 5A and are not
fused. External loads connected to the relays must have current
limiting devices provided to limit current to < 5 A.
W A R N I N G
Potential fire hazard. Do not daisy-chain the common relay
connections or jumper wire from the mains power connection inside
the instrument.
W A R N I N G
Potential electrocution hazard. In order to maintain the NEMA/IP
environmental ratings of the enclosure, use only conduit fittings and
cable glands rated for at least NEMA 4X/IP66 to route cables in to the
instrument.
AC line (100 ² 250 V) powered controllers
The wiring compartment is not designed for voltage connections in
excess of 250 VAC.
24 VDC powered controllers
W A R N I N G
Potential electrocution hazard. AC mains powered controllers
(115 V–230 V) are designed for relay connections to AC mains circuits
(i.e., voltages greater than 16 V-RMS, 22.6 V-PEAK or 35 VDC).
W A R N I N G
Potential electrocution hazard. 24 V powered controllers are designed
for relay connections to low voltage circuits (i.e., voltages less than
16 V-RMS, 22.6 V-PEAK or 35 VDC).
( nglis K 15