Precision Digital PD6310 - Manual (Page 15)

Model PD6210 & PD6310 Batch Controllers Instruction Manual
15
Relays
RATING
2 or 4 SPDT (Form C) internal and/or 4 SPST (Form A)
external; rated 3 A @ 30 VDC and 125/250 VAC resistive
load; 1/14 HP (≈ 50 W) @ 125/250 VAC for inductive loads
NOISE
SUPPRESSION
Noise suppression is recommended for each relay contact
switching inductive loads; see page 29 for details.
RELAY
ASSIGNMENT
Relays may be assigned to batch control total, sampling,
rate, or grand total alarms.
PRECLOSE
0-100% of batch size, individually user programmable for
each additional batch control relay beyond the first.
ALARM
DEADBAND 0-100% of span, user programmable
HIGH OR LOW
ALARM
User may program any alarm for high or low trip point.
Unused alarm LEDs and relays may be disabled (turn off).
RELAY
OPERATION
Batch control
Automatic (non-latching)
1
Sampling
Off (disable unused relays and enable Interlock feature)
Manual on/off control mode
Secondary Functions
2
Pump alternation control (2 to 8 relays)
Latching (requires manual acknowledge)
RELAY RESET
User selectable via front panel buttons, digital inputs, or PC
1. Automatic reset only (non-latching), when the input
passes the reset point or total is reset to zero.
2. Automatic + manual reset at any time (non-latching)
3. Manual reset only, at any time (latching)
4.
Manual reset only after alarm condition has cleared (L)
Note: Digital inputs may be assigned to acknowledge relays
programmed for manual reset. It is not recommended to
change the functions of front panel buttons to manual reset.
ALARM TIME
DELAY
0 to 999.9 seconds, on & off relay time delays
Programmable and independent for each relay.
FAIL-SAFE
OPERATION Programmable and independent for each relay.
Note: Relay coil is energized in non-alarm condition.
In case of power failure, relay will go to alarm state.
ALARM AUTO
INITIALIZATION
When power is applied to the controller, relays will reflect
the state of the input to the controller.
1
1. Alarms are active only when the batch is running.
2. These functions are not functional when the unit is being used as a batch
controller with total set to yes.