Seametrics FT500-Series - Manual (Page 3)

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SEN1
–G
SEN2
Alternate
DC power
Customer Supplies
1A Fuse
Pulse 1
Pulse 2
Pulse Outputs
(for metering pumps)
Regeneration Outputs
AC Power
Relay 1
Relay 2
Main power fuse
250mA
Line
Neutral
Ground
Ribbon connector
from display board
Resume
Start/Stop
Remote
Controls
NO
COM
NC
NO
COM
NC
Resume
COM
BATCH
+12 Power
Signal
Ground
RED
WHITE
BLACK
Meter
Dry contact
0-5 V or
0-10 V or
4-20 mA
Analog Switch*
Analog Header
A
+
-
B
Active
Passive Jumpers
A
P
5V
10V
4-20mA An Output
110 Vac
Jumpers 220 Vac
Jumper
*Consult Seametrics before
changing from factory preset
Batch Control Connection (if used). Connect the valve or
other device(s) to be controlled for starting and stopping the
batch to the appropriate relay terminals. Note: if the staged
shutoff (“prewarn”) will not be used, connect to relay one
only. Relay 1 remains energized for the entire batch cycle. If
a staged shutoff is desired, connect the main valve to Relay
2 (early shutoff) and the low-flow valve to Relay 1.
Monitor Alarm Connection (if used). Connect the alarm devic-
es to the appropriate relay terminals. Note that the relays have
both normally-open (NO) and normally-closed (NC) contacts.
Analog Connection (if used). This output can be configured
4-20 mA, 0-5 V or 0-10 V by placing a jumper in the correct
position on the analog header. The analog switch next to
the header selects active (powered) or passive (unpowered)
output. NOTE: Consult factory to change internal firmware
when changing switch position. When using the 12 Vdc
powered input you may only select passive output.
Power Connection. Connect AC or DC power as desired to
the appropriate terminals. For safety, if using AC power, be
sure to connect the ground terminal provided to a good earth
ground. If using 12 Vdc, use a 12 Vdc 500 mA power supply.
Replace the front panel, taking care to reconnect the ribbon
cable if it has been disconnected. When power is switched
on, the display should light up immediately with meaningful
letters or digits.
5.50"
gasket
PANEL
CUTOUT
5.50"
6.03"
6.03"
1/4" holes (4 required) .375"
INSTALLATION, REPAIR, CONNECTIONS
Page 2
Caution: Always disconnect power to the
unit before opening the teminal cover. Do
not reconnect power until all connections
have been made and the teminal cover has
been replaced.
PANEL CUT-OUT
Wall Mounting. Using the four screws provided, attach the
two foot brackets to the sides of the enclosure. Then attach
the unit to any secure surface by inserting screws through
the mounting holes in the foot brackets.
Panel Mounting. Follow the dimensions given for “Panel
Cutout”. Be sure to include the four corner screw holes.
After cutting and drilling, place the front plate on the front
side of the panel with its gasket against the panel, and the
remainder of the square housing on the back side. Slide the
screws through the four holes drilled in the panel, and into
the threaded holes in the housing. Tighten until the gasket
is firmly compressed against the panel.
Expose Terminals. Remove the four screws which hold the
front plate to the lower housing flange. Remove front plate.
The display board is attached to this front plate. It is also
connected to the power board by a ribbon cable. This cable can
be disconnected while making connections. Connections can be
made inside the enclosure, or the terminals can be unplugged
by gentle tugging for easier access.
Caution: When the control is powered up,
relay or analog outputs may be present. If
this could be a hazard, wait to make external
connections until programming is complete.
Repair
The only field-repairable component on the FT520 is the
fuse. If failure is due to a cause other than a blown fuse, it
is necessary to replace the entire board stack. Contact your
distributor for information.
Connections
Sensor Connection. Follow the “Connections” diagram to
connect either two or three wires from the flow meter or flow
sensor.