3.0 MECHANICAL ASSEMBLY AND INSTALLATION
3.1 UNPACKING AND INSPECTION
Your 504
transmitter was systematically inspected and tested, then carefully
packed before shipment. Unpack the instrument and inspect for
shipping damage. If possible, remove the casing and visually
inspect the internal circuitry. Notify the freight carrier immediately
if damage exists.
Each package includes an assembled transmitter and an owners'
manual. If these items are not according to your order, contact
your local distributor or Newport Electronics.
3.2
SAFETY CONSIDERATIONS
As delivered
from the factory/distributor, this instrument complies with
required safety regulations. To prevent fire or electrical hazard
and to ensure safe operation, please follow the guidelines below.
VISUAL INSPECTION: Do not attempt to operate the unit
if damage is found.
MOUNTING: Observe the mounting instructions in Sections
3.3 through 3.6, as applicable. The transmitter must be tightly
secured at the time of installation. Case dimensions are provided
in Section 6.0.
POWER VOLTAGE: Verify that the instrument is connected
for the power voltage rating that will be used (9-50 V dc).
If not, make the required changes as described in Section 4.
POWER WIRING: This instrument has no power switch; it will
be in operation as soon as the power is connected.
SIGNAL WIRING: Do not make signal wiring connections
or changes when power is on. Make signal connections before
power is applied. If connection changes are required, first
disconnect the power.
EXERCISE CAUTION: As with any electronic instrument, high
voltage may exist when attempting to install, calibrate, or
change the push-on jumpers of the transmitter.
Figure 3-1. Exploded View of Model
504
The low voltage
requirement of the 504 enables its use with a current-loop indicator
(Newport Model 508 recommended). Tapped holes on the back of the
case provide for custom mounting to a flat surface; flanges on
the back of the case provide for standard 8TK2 relay track mounting.
For flat surface mounting, use #6 hardware. For 8TK2 relay track
mounting, simply push onto track.
3.3 OPTIONAL ADAPTERS FOR MOUNTING
The following optional adaptors provide various mounting
choices:
a. Adaptor plate for either front-screw-entry surface mount,
or TR2/2TK relay track mount (see Figure 3-2).
b. Rail clamp for DIN-EN-50 022 relay track mount (Figure
3-3).
c. Spring retainers for external 76.4 to 88.9 mm (3 to
3.5 in) explosion-proof housing mount (see Figure 3-4).
3.4 SURFACE AND TR2/2TK RELAY TRACK
MOUNTING PROCEDURE
Figure
3-2. Bulkhead and Track Mounting
1. Position
plate for desired application.
2. Use
#6 hardware to mount plate to back of 504 case.
3.5 DIN
EN-50-022 RELAY TRACK MOUNTING PROCEDURE
DIN TRACK MTG: SHOWN FOR HORIZONTAL TRACK
DIN TRACK MTG: SHOWN FOR VERTICAL TRACK
Figure 3-3. DIN Track Mounting
1. Position plate for desired track direction.
2. Use
#8 flathead screws to mount plate to back of 504 case.
3. Snap
504 case assembly onto DIN rail.
3.6 EXTERNAL
EXPLOSION-PROOF HOUSING MOUNTING
Top View of Explosion-Proof Housing.
Unit and housing shown for reference only.
Figure 3-4. Spring Retainer for Explosion-Proof
Housing
1. Position spring retainer across back of 504 case.
2. Use wire protector feet (4 provided with above option) to
hold spring retainers in place.
3. Press 504 case assembly into explosion-proof housing.
4.0 POWER AND SIGNAL
INPUT CONNECTIONS
Figure 4-1. Power Input Connections
TEST,
PWR +, and PWR - screws accept 2 mm (13 gauge) or lighter wire.
CASE GND is grounded to the case. Input range is 9-50 V dc.
| SCREW-TERMINAL
PIN ASSIGNMENT |
|
1
|
TEST |
|
2
|
+
POWER/OUTPUT |
|
3
|
-
POWER/OUTPUT |
|
4
|
CASE
GND |
|
A
|
N/C |
|
B
|
+
mV/INPUT |
|
C
|
-
mV/INPUT |
|
D
|
N/C |
|
|
