DWYER INSTRUMENTS, INC. | dwyer-inst.com396
Signal Converters
PROCESS CONTROL
POWER SUPPLY
The economical and reliable Series A-700 Power Supply is suitable for powering
all Dwyer pressure, temperature or air velocity transmitters. Inexpensive, open-frame
design allows convenient access to input/output solder terminals. Auxiliary inputs are
selectable for operation from power sources found worldwide. Compact size eases
enclosure installations.
FEATURES/BENEFITS
• Universal supply voltage input
• Compact size
APPLICATIONS
• BAS
• HVAC
SPECIFICATIONS
AC Input: 100/120/220/230-240 VAC
±10%, 47-63 Hz.
DC Output: 24 to 28 VDC regulated.
Maximum Current Output: A-700: 0.5 A
@ 60 Hz, 0.45 A @ 50 Hz; A-700-2: 2 A
@ 60 Hz, 1.8 A @ 50 Hz; A-700-3: 4.8 A
@ 60 Hz, 4.5 A @ 50 Hz.
Operating Temperature: 32 to 122°F (0
to 50°C).
External Fuse Required: 0.5 A for 100
to 120 VAC, 0.25 A for 220 to 240 VAC.
Dimensions: 4-7/8˝H x 4˝W x 1-5/8˝D.
Weight: 2 lb.
A
B
E
N
3/4
[19.05]
R
C
D
8X Ø.188
MTG HOLES
M
L
G
H
J
3/4
[19.05]
Dim. 0.5 amp 2.4 amp 4.8 amp Dim. 0.5 amp 2.4 amp 4.8 amp Dim. 0.5 amp 2.4 amp 4.8 amp
A
B
C
D
4 [ 101.6]
3-3/8 [85.73]
4-7/8 [123.84]
4-1/8 [104.78]
4-7/8 [123.83]
4-1/8 [104.78]
5-5/8 [142.88]
4-7/8 [123.83]
9 [228.6]
8 [203.2]
4-7/8 [123.83]
4-1/8 [104.78]
E
G
H
J
25/64 [9.92]
1-5/8 [41.28]
37/64 [14.68]
-
1/4 [6.35]
2-1/2 [63.5]
43/64 [17.07]
1-1/4 [31.75]
1/2 [12.7]
2-3/4 [69.85]
-
1-1/4 [31.75]
L
M
N
R
17/64 [14.68]
51/64 [20.24]
-
29/64 [11.51]
2-55/64 [72.63]
1-1/32 [26.19]
1-1/4 [31.75]
29.64 [11.51]
-
-
1-1/4 [31.75]
17/32 [13.49]
MINI-NODE
™
COMMUNICATION SIGNAL CONVERTER
Converts RS-485 to USB, Integral USB Connector, No External Power
YELLOW LED GREEN LED
27/32
[21.43]
3-13/64
[81.36]
57/64
[22.62]
The Model MN-1 Mini-Node
™
Communication Signal Converter is a low cost device
that converts half duplex RS-485 serial communications signals into a signal that can
be read by any computer with a USB port. The integral USB connector and RJ-45
connector reduces set up time by eliminating extra wiring. The Model MN-1 is powered
via the USB connection which eliminates the need for an external power source. The
compact size is great for eld installation, control panels, and lab testing.
FEATURES/BENEFITS
• Converts half duplex RS-485 via USB port
• Reduces set up time of process controllers
APPLICATIONS
• Oven, boiler, or chiller control
• Hot plates/melt pots
• Packaging equipment
• Environmental chambers
• Medical equipment
• Food service equipment
SPECIFICATIONS
Power Requirements: No external power required.
Power Consumption: 0.4 W.
Isolated Voltage: 3000 VDC.
Input Impedance: 96 kΩ.
USB Connector: B-type (female).
RS-485 Connector: RJ-45.
Baud Rate: 75, 150, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, and
115200 bps.
Compatibility: Full compliance with USB V.2.0 specication.
Agency Approvals: CE.
MODEL MN-1
®
SERIES A-700
MODEL CHART
Model Description
A-700
A-700-2
A-700-4
0.5 A
2 A
4.8 A
MODEL CHART
Model Description
MN-1 Mini-Node
™
USB to RS-485 converter