Emerson 381333234 E manual Time Delay Adjustment, Sensor Adjustments, Time Delay Settings

SECTION 4 ADJUSTMENTS

Time Delay Adjustment

Standard time delays are set to customer specifications (if none specified, standard factory settings are used).

To change a setting, follow procedure on page 4-2. Use Table 4-1 as a guide to time delay values and their corre- sponding adjustment DIP switch or potentiometer.

Table 4-1. Time Delay Settings

DESCRIPTION

LABELS

FACTORY ADJUSTMENT

SETTING RANGE

S3 DIP SWITCH

ADJUSTMENT

POTENTIOMETER

Override Momentary	TD ES	3 seconds	1 second	Actuator 1 on		1	—
Normal Source Outages
			3 seconds	Actuator 1 off
						1
Transfer to Emergency	TIMER	0 minutes	0 to 5	—	—		P2
	N/E	(full ccw)	minutes
Override Momentary	—	4 seconds	non-adjustable	—	—		—
Emergency S. Outages
Retransfer to Normal	TIMER	30 minutes	1 second to	—	—		P1
	E/N	(full cw)	30 minutes
Unloaded Running	—	5 minutes	non-adjustable	—	—		—
(Engine Cooldown)

Sensor Adjustments

Voltage and frequency sensor pickup and dropout points are set to customer specifications (if none specified, standard factory settings are used). To change a setting, follow procedure on page 4–2. Use Tables 4-2 and 4–3 for settings and corresponding DIP switch actuators.

Table 4-2. Voltage and Frequency Settings. (

NOTICE

Any change in these settings may affect the normal operation of the automatic transfer switching equipment. This change could allow the load circuits to remain connected to a low voltage source.

Shaded DIP switches are standard factory settings).

DESCRIPTION	LABELS	SETTING	% of nominal		S1 DIP
			FACT. SET	ADJ RANGE	SWITCH
	PU / N	Pickup	90 %	95 % *	Actuator 3 off		3
				90 %	Actuator 3 on
									3
				90 % *	Actuator 1 off		1
Normal Source Voltage					Actuator 2 off		2
					Actuator 1 on
				85 %						1
	DO / N	Dropout	85 %		Actuator 2 off		2
				80 %	Actuator 1 off	1
					Actuator 2 on					2
				70 %	Actuator 1 on					1
					Actuator 2 on					2
Emergency Source Volt-	– –	Pickup	90 %	non-adjustable	– –
age	– –	Dropout	75 %	non-adjustable
	– –	Pickup	95 %	non-adjustable	– –
Emergency Source	– –	Dropout	85 %	non-adjustable
				60 Hz	Actuator 4 off
Frequency	60 / 50	60 / 50 Hz	60 Hz					4
	Hz
				50 Hz	Actuator 4 on						4
				3 phase	Actuator 6 off
Voltage Phases	3 4 , 1 4	3 4 / 1 4	3 4					6
				1 phase	Actuator 6 on						6

* If dropout voltage is set to 90%, the pickup voltage must be set to 95%.

Table 4-3. Transformer Voltage Adjust.

(Low setting shifts all voltage settings down 4.2%; for example, 240 V to 230 V, or 480 V to 460 V)

DESCRIPTION	LABELS	FACTORY SETTING	ADJUSTMENT	S3 DIP SWITCH
Voltage Adjust (4.2%)	LOW /	HI	LOW	Actuator 2 off
	HI		HI	Actuator 2 on

2 2

4--1