Koso REXA Electraulic Xpac, Installation And Operation Manual

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REXA
Electraulic Actuators & Drives
Xpac
Installation Manual -- Version 5.1 (5/09)
C-7
Connections to the electronic limit
switches used in an FM approved
class I , DIV. 2, Groups A, B, C & D
actuator must conform to docu-
ment E 91001 in Appendix D.
A value for r1 less than r2 will simulate
the normal operation of mechanical
limit switches.
GENERAL SPECIFICATION
Quantity: 2
Type: Single Pole, Double Throw (SPDT)
Rating: 1 amp @ 30 vdc, 0.3 amp @ 120 vac
- resistive
Differential Travel (Hysteresis): 0.1%
Connection: terminal strip on the auxiliary board
CONNECTION
The electronic limit switch board mounts to the top of the PCP. All
wiring connections are made directly to this auxiliary board. The
common terminal and either the normally open or normally closed
connection may be used.
OPERATION
The Relay auxiliary board is used in conjunction with the Option
Board Sub-Menu (OBd). The activation point of each relay, in percent
of calibrated stroke, is specified by the corresponding menu entry,
r1 for relay K1, and r2 for relay K2. For relay K1, r1 specifies the
actuator position below which K1 is energized. For K2, r2 specifies
the actuator position above which K2 is energized. The following
chart illustrates the relay states as a function of actuator position
and the relative values of r1 and r2. K1 and K2 are operational in
any mode, Auto, LOCAL or SEtUP. A red LED is illuminated when
the relay is energized (ON).
Position
100%
LED
Relay K1 De-energized OFF Position above the
Relay K2 Energized ON value of r2 (ON)
Relay K1 De-energized OFF
Relay K2 De- energized OFF
Relay K1 Energized ON Positions below the
Relay K2 De-energized OFF value of r1 (ON)
0%
r2
r1
C.4 Alarm Indication
The position transmitter and limit switch auxiliary boards contain an
alarm relay. If the actuator is unable to follow the applied control signal,
this relay will change state (de-energize). This includes error codes (see
Section 8), placing the actuator in LOCAL or SEtUP and loss of power.
RELAY 1
RELAY 2