46
2-3-7
Terminal Blocks for CT and Memory Bank Designation Inputs
This section covers the arrangement and wiring of terminals on the Terminal
Blocks for CT and memory bank designation inputs. The input signals will be as
shown below for through-type Terminal Blocks (XW2B-20G4 or XW2B-20G5).
Secure the lead wires so that they do not make contact with the product. If they
touch the product or other items they may cause damage.
The diagram shows the terminal arrangement for a XW2B-20G5, but the num-
bers are the same for a XW2B-20G4. Leave unused terminals open.
1
3
5
7
9
11
13
15
17
19
2
4
6
8
10
12
14
16
18
20
CT
CT
CT
CT
BANK 1
BANK 0
ING
BANK 2
Point 0
Point 1
Point 2
Point 3
CT
CT
CT
CT
Point 4
Point 5
Point 6
Point 7
Terminal no.
Terminal no.
2-3-8
Sensor Input Precautions
This section explains the precautions to be observed when using sensor inputs.
Display Precision
The display precision for the E5ZD-8H
jj
M-E can be assured when G79-200C
cable is used. Due to the influence of the cable’s lead wire resistance, however,
errors may occur if the cable length is 2 meters or more.
For the E5ZD-8H
j
KJM-E, the influence of the lead wire resistance on the dis-
play is 1% FS/100
Ω
max. For the E5ZD-8H
j
PM-E, it is 1% FS/5
Ω
max (per
line). The influence of lead wire resistance on the E5ZD-8H
j
PM-E is approxi-
mately 0.23
Ω
for G79-100C cable, 0.43
Ω
for G79-200C cable, and 1.01
Ω
for
G79-500C cable. When G79-500C is used instead of G79-200C, the difference
can be found by means of the following equation:
(1.01 – 0.43)
×
1/5 = 0.116% FS
The display precision for the E5ZD-8H
j
PM-E is calculated within
±
0.5% FS
±
one digit maximum, so the result can be obtained by means of the following
equation:
0.5 + 0.116 = 0.616% FS
The command error will thus be
±
0.616% FS
±
one digit maximum. Command
errors are more likely to occur when long cable is used, due to the influence of
noise. Therefore, try to reduce noise as much as possible, and ground with
shields at both ends.
Sensor Expansion
To avoid errors in temperature measurement, when expanding the thermocou-
ples be sure to use compensating lead wire which conforms to the thermocou-
ples being used. In addition, do not place any metal other than the thermocou-
ples and the compensating lead wire between the sensors and the Terminal
Block.
XW2B-20G4 or XW2B-20G5
Terminal Arrangement
E5ZD-8H
jj
M-E Hardware
Section 2-3
Содержание E5ZD
Страница 1: ...Cat No Z042 E1 4 Multipoint Temperature Controller E5ZD ...
Страница 2: ......
Страница 3: ...E5ZD Multipoint Temperature Controller Operation Manual Revised November 1996 ...
Страница 4: ...iv ...
Страница 6: ...vi ...
Страница 8: ......
Страница 10: ......
Страница 18: ......
Страница 76: ......
Страница 128: ......
Страница 132: ......
Страница 142: ......
Страница 146: ......
Страница 148: ......
Страница 150: ......
Страница 154: ......
Страница 157: ...Cat No Z042 E1 4 E5ZD Multipoint Temperature Controller OPERATION MANUAL ...