Hach-Lange SC 60 - Manual (Page 17)

13
Installation
3.3.1 Installation in Conduit
In hard-wired electrical applications, the power and safety ground
service drops for the instrument must be 18 to 12 AWG. See
Figure 10 for strain relief and conduit opening sealing plug
information. See section 3.3.3 on page 14 for wiring information.
3.3.2 Installation Using a Power Cord
DANGER
Use of a power cord is not acceptable in Class 1, Division 2
Hazardous Location Installation (see).
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
Replacement Parts and Accessories on
page 41 . See Figure 10 for strain relief and conduit opening sealing
plug assembly. See section 3.3.3 on page 14 for wiring information.
Figure 9 Removing Voltage Barrier
1 High voltage barrier 2 Unsnap the barrier latch then pull out to remove the barrier.
NC NC NC COM COM COM NO
F1 F2
NO NO
RELAY C RELAY B RELAY A
1
1
+ DATA
+ OUT 2
! DATA
! OUT 2
SER VICE REQUEST
SHIELD/CHASSIS GND
+ V
+ OUT 1
GND
! OUT 1
2
2
3
3
4
4
5
5
6
PROBES
ANAL
OG
OUTP
UTS
PCB
CONNECTOR
FIELD WIRING
INSULATION MUST
BE RATED TO
80° C MINIMUM
DANGER - EXPLOSION HAZARD
DANGER - RISQUE D'EXPLOSION
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE
UNLESS AREA IS KNOWN TO BE NON-HAZARDOUS.
NE PAS DEBRANCHER TANT QUE LE EST SOUS
TENSION, A MONIS QU'IL NE S'AGISSE D'UN
EMPLACEMENT NON-DANGEROUX
J1
J2
J4
NETWORK
INTERFACE
CARD
J3
J5
J6
U5
U9
S1
2
1
Figure 10 Using the Optional Strain Relief and Conduit Plug
1 Power cord strain relief 2 Conduit strain relief 3 Conduit opening sealing plug
2
3