Installation Instructions

Installation Instructions
Document No. 586-459
Rev. 1, November, 2000
HAND-OFF-AUTO (HOA) Upgrade Kits for
Modular Equipment Controllers and Point
Blocks
Page 1 of 2
Product Description
HOA Upgrade Kits are available for HOA-ready*
MECs, Analog Point Blocks and Digital Point Blocks.
The upgrade kits replace covers with new covers
equipped with HOA switches. HOA switches enable
digital outputs to be manually placed into HAND
(ON), OFF, or AUTO control. Analog outputs can be
placed into AUTO and nine manual control positions.
Product Numbers
549-517 HOA Upgrade Kit for MEC
549-518 HOA Upgrade Kit for Digital Point Block 4DI, 4DO
549-519 HOA Upgrade Kit for Digital Point Block 8DI, 4DO
549-520 HOA Upgrade Kit for Analog Point Block 4AI, 4AO
Required Tools
No tools are required.
Expected Installation Time
1 minute.
Installation
Use the following installation procedure when
installing upgrade kits on the MEC and point blocks.
1. Verify that all HOA switches are in the AUTO
position.
2. Remove AC power to the MEC or point block.
3. Remove the existing MEC or point block cover.
(Installation continued on next page.)
9
DI5
10
11
DI6
12
13
DI7
14
15
DI8
16
DI1
1
2
DI2
3
4
DI3
5
6
DI4
7
8
C57
DO25 NO 58
NC 59
C60
DO26 NO 61
NC 62
C63
DO27 NO 64
NC 65
C66
DO28 NO 67
NC 68
C69
DO29 NO 70
NC 71
C72
DO30 NO 73
NC 74
C75
DO31 NO 76
NC 77
23 +
AO12
24 -
21 +
AO11
22 -
19 +
AO10
20 -
17 +
AO9
18 -
31 +
AO16
32 -
29 +
AO15
30 -
27 +
AO14
28 -
25 +
AO13
26 -
39 +
AI20
40 -
37 +
AI19
38 -
35 +
AI18
36 -
33 +
AI17
34 -
47 +
AI24
48 -
45 +
AI23
46 -
43 +
AI22
44 -
41 +
AI21
42 -
+
24 VDC
SENSOR
SUPPLY
BLN
TX
BLN
RX
EXP
TX
EXP
RX
MODEM
STATUS
BATT
SHLD
49
50
51
52
53
54
55
56
C78
DO32 NO 79
NC 80
MEC0058R1
0
0
0
0
0
0
0
0
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
HOA
SWITCH
LED
MEC0057R1
Figure 1. MEC upgrade kit cover. Figure 2. MEC upgrade kit and MEC.
* HOA-ready MECs and point blocks have a 10-position connector on the top of their circuit boards.