Hach sc200 Basic User Manual

4.7 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.
4.8 Wiring for 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—250 V) powered controllers
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English

Hach sc200 Specifications

General

Enclosure Rating	NEMA 4X/IP66
Operating Temperature	-20 to 60 °C (-4 to 140 °F)
Ambient Temperature	-20 to 60 °C (-4 to 140 °F)
Enclosure Material	Polycarbonate
Operating Humidity	0 to 95% non-condensing
Relay Outputs	Up to 4 SPDT relays
Storage Conditions	-40 to 70 °C (-40 to 158 °F)
Display	Graphical LCD
Inputs	2 digital sensor inputs
Outputs	4-20 mA
Power Supply	100 to 240 VAC, 50/60 Hz
Analog Outputs	2 or 4, 0/4-20 mA
Certifications	CE
Communication	Modbus RTU, HART
Dimensions	144 x 144 mm
Mounting	Panel mount
Output	4-20 mA
Power Requirements (Voltage)	100 to 240 VAC
Warranty	1 year
Weight	1.2 kg