Alarm Connections - Hach 9186 Instrument Manual

Installation
Figure 12 Removing the Shielding Plate
RP2
K6
9180
AMP
V1.03
Ic4
1. Shielding Plate
2. Thumbscrew (loosen to remove shield)
Figure 13 Proper Wire Preparation and Insertion
1. Strip ¼-inch of insulation.

4.4.4 Alarm Connections

DANGER
The relay connection area is
designed for only high voltage
(100–240 V ac) connections. A
shock hazard can exist if low
voltage (<30V) connections are
simultaneously made in the relay
connection area.
Note: Current to the relay contacts
must be limited to 3 amps resistive.
Local removal of power from the
relays must be available in case of
emergency or for servicing the
product. If the relay contacts are
supplied with greater than 30 Volts,
power removal can be made with an
external switch and a 3-amp fuse or
with a switched 3-amp circuit
breaker.
18
K2
P1
Temp +
Temp –
K9
Ref
Counter
Work
Aux
J1
K5
RP1
K4
IC2
Mains
PE
N
L
1
2. Seat insulation against connector with no bare wire exposed.
The product enclosure is IP65; however, achieving this protection level depends
on the use of proper hardware during installation. Use standard off-the-shelf
NEMA-approved conduit hardware. Take care to select the style of conduit
hardware that will seal to the enclosure wall when using flexible or rigid conduit.
The analyzer contains four unpowered alarm relays (3 A resistive,
100–230 V ac) designed for use with high voltage (greater than 30V-RMS). The
Normally Open and Common relay contacts are connected when an alarm
condition is active. The relay connector accepts 18–12 AWG wire. Determine wire
gauge based on load application. Less than 18 AWG is not recommended.
1. Remotely disconnect all instrument power before opening the analyzer door.
2. Strip the insulation on each wire back ¼-inch.
3. Remove the front cover. Remove the shielding plate inside the instrument.
4. Route the wire through the back right conduit opening. Use the provided
cord-connected strain reliefs. Use appropriate NEMA sealing hardware.
5. Insert the wire ends into the connector until the insulation seats against the
connector. Refer to
Amperometry 9180
RE1
Serial N°:
V1
V2
J1 RE3
V3
S1
RX/TX +
V4
RX/TX – S2
Shield
IC1
+
S3/Sys.Alarm
I1
-
C8
+
S4/Timer
I2
-
Ind : D
L2 Model : 09125-A-2000
Serial No : 0104 549
C6 N
Temp +
L
Temp –
Vac : 100 - 240 V T 2A L
Ref.
GND
Counter F1
Z6
Wiring located behind the guide plate shall be GND
Work
rated at 80 C (176 F) or higher. 250V
Aux
under shielding plate
+ V
50/60Hz 25VA
GND
Vac: 100 – 240
– V
Caution: For continued protection
against risk of fire, replace only
with same type and rating fuse.
3. Ground stud (pulls the shield out of the instrument)
Figure 14 and Table 1 on page
1
2
3
PE
2
21.