RACKS
24 Channel
FEATURES
• For use with System 50 Style Controllers
• Available for Miniature, G5 and
OpenLine® Modules
• UL, CSA Certified
24 CHANNEL RACK: Miniature
Part No. 70MRCQ24
Dimensions are shown in inches
(and millimeters).
Tolerances are ± 0.010 (0,25)
unless otherwise specified.
0.40
(10,2)
+
40 1
1.70
(43,2)
1A FUSE
SOCKETS
FOR
OPTIONAL
1A FUSE
LOGIC SUPPLY
TERMINAL STRIP
–
System 50
8.00 (203,2)
7.50 (190,5)
121110
987654321
13
2423222120191817161514
0.25 (6,4)
FIELD WIRING
TERMINAL STRIP
(POSITIONS 0-11)
NOTE: MAXIMUM
TERMINAL SCREW
TORQUE NOT TO
EXCEED 5 IN-LBS.
2.60
(66,0)
KEY SLOT
PINS 23/25
PIN 1
0
23
W
R
Y
B
AC INPUT
AC OUTPUT
DC INPUT
DC OUTPUT
STATUS LED
50 PIN EDGE CARD OR
HEADER CONNECTOR FOR
LOGIC SIGNALS (SEE SCHEMATIC)
21
22
48
2
1
6.00
5.50
(139,7)
(152,4)
11
3
19
20
6
18
17
8
7
15
16
5
4
10
9
14
12
13
System 50
3738394041424344454647
36
5A
FUSE
MODULE HOLD DOWN
STRIP WITH THUMB SCREWS
2526272829303132333435
FIELD WIRING
TERMINAL STRIPS
(POSITIONS 12-23)
0.25 (6,4)
STANDOFF I.D.
0.15 (3,8) DIA.
(4 PLACES)
CLEARANCE
FOR #6 SCREWS
2.20 (55,9)
MAX.
0.75
(19,1)
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
System 50
22
System 50
24 CHANNEL RACK: G5
Part No. 70GRCQ24
Dimensions are shown in inches
(and millimeters).
All tolerances are ± 0.010 (0,25)
unless otherwise specified.
HOLES FOR USER
INSTALLED JUMPER
(22 AWG) COPPER
WIRE
50 PIN STRAIGHT
HEADER CONNECTOR
PIN 1
1.675
(42,55)
7.50 (190,5)
LOGIC SUPPLY
TERMINAL STRIP
.075
(1,91)
7.00 (177,8)
STANDOFF I.D. 0.15 (3,81) DIA.
(4 PLACES) CLEARANCE
FOR #6 SCREW
24 Channel Racks
FIELD WIRING
TERMINAL STRIP
5.75
(146,1)
.25 (6,4)
(158,8)
.25 (6,4)
NOTE: MAXIMUM
TERMINAL SCREW
TORQUE NOT TO
EXCEED 5 IN-LBS.
6.25
System 50
.093 (2,36)
REF.
NYLON STANDOFF
(1 PLACE)
3.380
(85,85)
.750 (19,05) REF.
System 50
23
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
SCHEMATIC: PART NO. 70MRCQ24 AND 70GRCQ24
LOGIC SUPPLY
TERMINAL STRIP
–
1 A FUSE
OPTIONAL
1A FUSE
+
49
47
45
43
41
39
37
35
33
31
29
27
25
123456789101112 131415161718192021222324
1
2
0 1 2 3 4 5 6 7 8 9 10 11
3
4
5
System 50
5A FUSES
(MINI RACKS ONLY)
FIELD WIRING
TERMINAL STRIP
MODULE
POSITION
LED STATUS
INDICATORS
(MINI RACKS ONLY)
ALL
EVEN
PINS
2-50
23
21
19
17
15
13
11
9
7
5
3
1
50 PIN
CONNECTOR
5
4
23 22 21 20 19 18 17 16 15 14 13 12
3
2
1
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
ORDERING INFORMATION
(modules ordered separately)
Part Number I/O Description UL CSA Style
70MRCQ24-EC 24 Card edge X X Mini
70MRCQ24-HL 24 50-pin header with ejector levers X X Mini
70GRCQ24-HL 24 50-pin header with ejector levers X X G5
PULL UP RESISTOR
NETWORK 3.3 KW
(3 PLACES)
LED STATUS
INDICATORS
(MINI RACKS ONLY)
MODULE
POSITION
5A FUSES
(MINI RACKS ONLY)
Available from your local Grayhill Distributor. For prices and discounts, contact a local
Sales Office, an authorized local Distributor, or
Grayhill.
System 50
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
System 50
24
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