Yokogawa RotaMASS 3-Series User Manual

Page 45

4. INSTAllATION

4-17

IM 01R04B04-00E-E 8th edition March 01, 2011 -00

CAUTION

Special connections for Ex version :
The converter case must be connected to the potential equalisation facility of the
hazardous area , e.g. to the U-clamp PA terminal on the outside at the converter. Please refer to chapter 9
“EXPLOSION PROTECTED TYPE INSTRUMENTS”.

power supply cable
Cable

: Use cables acc. to VDE 0250, VDE 0281 or equivalents.

Outer diameter : DIN and NPT cable gland: 6.5 to 10.5 mm in diameter

Nominal cross section of conductive wire

: 0.5 to 2.5 mm²

Outer diameter of cores insulation part

: < 3.6 mm

Connecting length of conductive wire part

: < 9 mm

24v dC connections
For the DC power supply type, connect a 24 V DC power supply, following the precautions below.

1. Connecting Power Supply
Please refer to the Figure in right. AC power supplies
can not be connected. Confirm the polarity of DC power
supply.

2. Supply voltage rating
The specification for the supply voltage is 20.5 – 28.8 V DC. But because the input voltage of the converter
drops due to cable resistance, it should be used within the following range.

3. Ground connection
Connect ground as shown on page 4-8 due to EMC protection.

L/+

N/-

20.5 to 28.8 V DC

F49.EPS

1000
(3300)
900
(2970)
800
(2640)
700
(2310)
600
(1980)
500
(1650)
400
(1320)
300
(990)
200
(660)
100
(330)
0

F410.EPS

Allowed
cable length
m (ft)

Cable crosssection area 1.25mm2

Cable crosssection area 2mm2

voltage V