Electrical Installation; Installation In Conduit - Hach sc100 1720E Instrument Manual

Installation
3.2

Electrical Installation

DANGER
The instrument must be installed
by qualified technical personnel
for adherence to all applicable
electrical codes. The 1720E/sc100
product configuration is not
intended for installation in
hazardous locations.

3.2.1 Installation in Conduit

3.2.2 Installation Using a Power Cord
DANGER
Use of power cords is not
permitted in hazardous locations.
Figure 12 Removing Voltage Barrier
J1 J1
S1 S1
J4 J4
NETWORK NETWORK
INTERFACE INTERFACE
CARD CARD
1. High voltage barrier
14
High-voltage wiring for the controller is conducted behind the high voltage
barrier in the controller enclosure. The barrier must remain in place unless a
qualified installation technician is installing wiring for power, alarms, or relays.
See Figure 12
In hard-wired electrical applications, the power and safety ground service drops
for the instrument must be 18 to 12 AWG. See
relief and conduit opening sealing plug information. See
for wiring information.
Where permitted by local electrical codes, a sealing-type strain relief to
maintain the NEMA 4X/IP66 environmental rating and a power cord less than
3 meters (10 feet) in length with three 18-gauge conductors (including a safety
ground wire) can be used, see
See Figure 13 on page 15
assembly. See
J3 J3
J2 J2
U5 U5
J5 J5
U9 U9
J6 J6
for barrier removal information.
Replacement Parts and Accessories on page
for strain relief and conduit opening sealing plug
section 3.2.3 on page 15
PCB PCB PCB PCB
CONNECTOR CONNECTOR CONNECTOR CONNECTOR
2. Unsnap the barrier latch then pull out to remove the barrier.
Figure 13 on page 15
section 3.2.3 on page 15
for wiring information.
1 1 + + + + DATA DATA DATA DATA
2 2 – DATA – DATA
3 3 SERVICE REQUEST SERVICE REQUEST
4 4 + + + + V V V V
5 5 GND GND
6 6
1 1 + + + + OUT 2 OUT 2 OUT 2 OUT 2
2 2 – OUT 2 – OUT 2
3 3 SHIELD/CHASSIS GND SHIELD/CHASSIS GND
4 4 + + + + OUT 1 OUT 1 OUT 1 OUT 1
5 5 – OUT 1 – OUT 1
FIELD WIRING FIELD WIRING FIELD WIRING FIELD WIRING
INSULATION MUST INSULATION MUST INSULATION MUST INSULATION MUST
BE RATED TO BE RATED TO BE RATED TO BE RATED TO
80° C MINIMUM 80° C MINIMUM 80° C MINIMUM 80° C MINIMUM
for strain
55.
1
2